JP7324446B2 - Construction site factory system - Google Patents

Description

The present invention relates to a factory system for construction sites, and more specifically, in construction sites such as civil engineering and construction, the construction site is isolated from the outside world, and various devices for air conditioning, dust prevention, and removal of harmful substances are installed. and relates to a construction site factoryization system that makes the construction site a working environment as if it were in a factory.

In the past, at construction sites of civil engineering and construction, bad weather (rain, snow, etc.) caused delays in placing concrete and painting work, which forced extension of the construction schedule. Especially in cold regions, the temperature drops in winter, which interferes with civil engineering and construction work (concrete pouring, painting, etc.). May be extended.

Therefore, in order to protect the construction site from bad weather (rain, snow, etc.) at the construction site of civil engineering and construction, it is easy to stretch the membrane material and it is lightweight, so a large-scale lifting device or self-lifting device is required. No temporary roof system is disclosed. (See Patent Document 1.)

JP-A-9-256639

The roof device described in Patent Literature 1 is only for extending a roof over the construction site in order to protect the construction site from rain and snow. In other words, although direct rainfall and snowfall can be prevented, it is not possible to control the temperature in high temperature conditions in summer and low temperature conditions in winter, or to control humidity to improve high humidity conditions. Here, the humidity managed in this specification is the relative humidity generally represented by weather forecasts and the like. Relative humidity is the percentage of water vapor contained in the air (for example, 30%), and hereinafter, all humidity in this specification is relative humidity. Moreover, the roof device described in Patent Document 1 cannot be used in the first place for repair work of main girders of bridges such as roads and railways at existing civil engineering sites.

In other words, H-shaped and box-shaped steel materials, which are excellent in strength, workability, and economic efficiency, are preferably used for main parts (especially main girder parts) of bridges such as existing roads and railways. Such steel materials are mainly coated with resin (epoxy resin, fluororesin, etc.) paints to prevent corrosion (including rust prevention). Rust, etc.) may occur, and it is necessary to carry out repair work such as repainting for rust removal and corrosion protection.

At a construction site where such repair work is performed, it is necessary to set up a scaffolding or the like under the main girder where the repair work is to be performed to secure a working space for the worker. In addition, it is necessary to ensure the safety of workers by wearing dust-proof and gas-proof masks, etc., in order to prevent scattering of dust from old paint containing harmful substances and rust removal, and VOC (volatile organic compounds) during re-painting. There is

In addition, ordinary paint and concrete materials are subject to temperature and humidity constraints suitable for ensuring quality. For this reason, it is important to prepare a construction site environment that is not easily affected by bad weather (rain, snow, etc.). , dust reduction technology, and VOC (volatile organic compound) concentration control technology are introduced, and it is desired to create a working environment as if the construction site is in a factory sealed off from the outside space.

In order to solve the above problems, the present invention seals and isolates the construction site, which is the work space of the worker, from the external space, and furthermore, temperature and humidity control technology, dust reduction technology, and VOC (volatile organic compound) concentration control. By introducing technology, the purpose is to provide a factory-like construction site that makes the construction site a working environment like a factory.

In order to achieve the above object, the present invention provides the following techniques.

The present invention comprises sealing means for isolating a construction site for construction or repair of civil engineering or building from an external space, and the construction site includes temperature and humidity control means for adjusting temperature and humidity, and dust reduction for removing dust. and VOC concentration control means for controlling and adjusting the concentration of volatile organic compounds.

In addition, the sealing means includes a partition member that surrounds the construction site, and a plurality of highly waterproof and airtight sealing panels that are installed on the partition member to seal the construction site from the external space. It is characterized by blocking.

In addition, the sealing means installs a partition member so as to surround the construction site, and wraps the partition member with a highly waterproof and airtight heat-shrinkable sheet to cover the construction site from the external space. It is characterized by hermetic isolation.

Further, the temperature/humidity control means is characterized by comprising salt removal means for removing salt in the air.

The present invention comprises sealing means for isolating a construction site for construction or repair of civil engineering or building from an external space, and the construction site includes temperature and humidity control means for adjusting temperature and humidity, and dust reduction means for removing dust. and VOC concentration control means for controlling and adjusting the concentration of volatile organic compounds.

In other words, since it is equipped with a sealing means that isolates the construction site from the external space, it is possible to minimize fluctuations in the schedule of the construction site due to the effects of climate and weather at the construction site where civil engineering and construction are being constructed or repaired. be able to. Furthermore, at least one or more of temperature and humidity control means for adjusting temperature and humidity, dust reduction means for removing dust, and VOC concentration control means for controlling and adjusting the concentration of volatile organic compounds are installed at the sealed construction site. can be provided. As a result, when the temperature and humidity control means is provided, it is possible to provide workers with a comfortable construction site that is air-conditioned. In addition, when dust reducing means is provided, it is possible to protect the operator from dust scattered during the work of removing old paint and rust containing harmful substances. Moreover, when a VOC concentration control means is provided, it is possible to protect workers from the generation of VOCs (volatile organic compounds) during repainting.

According to the factoryization of the construction site of this embodiment, civil engineering such as repair work (removal of old paint and rust, subsequent repainting, etc.) and construction work (concrete placement, etc.) that were conventionally performed outside Since a construction site can be made into a working space as if it were in a factory sealed off from the outside space, it is possible to improve worker safety and work efficiency. Furthermore, it is possible to improve the quality of painted or placed concrete.

In addition, the sealing means installs a partition member so as to surround the construction site, and installs a plurality of highly waterproof and airtight sealing panels on the partition member to seal off the construction site from the external space. . By installing a plurality of sealing panels on the partition member in this manner, the construction site can be isolated and sealed from the external space. As the sealing panel, a panel having a highly airtight and waterproof sheet or a thin resin plate stretched thereon is preferably used.

Here, well-known suspended scaffolding, single pipe scaffolding, framework scaffolding, prop scaffolding, etc. are preferably used as the partition member. For example, suspension scaffolding is preferably used when repairing a main girder of a bridge, and single-tube scaffolding, framework scaffolding, post scaffolding, etc. are preferably used when newly constructing piers L of bridge V.

The sealing means includes a partition member to surround the construction site, and the partition member is covered with a highly waterproof and airtight heat-shrinkable sheet to seal and isolate the construction site from the external space. That is, when the partition member is covered with a heat-shrinkable sheet, and the worker heats the heat-shrinkable sheet with a heat gun or the like, the heat-shrinkable sheet is welded and shrunk, and the construction site can be sealed off from the external space. . As the heat-shrinkable sheet, a sheet having high waterproofness and airtightness, flame retardancy, and being welded and shrunk by a predetermined heat is preferably used.

Further, the temperature/humidity control means includes salt removal means for removing salt in the air. Specifically, when the construction site is near the sea, a desalting filter is attached to the temperature/humidity control means to remove salt from the air supplied from the outside of the construction site. In this way, the temperature and humidity are controlled at the construction site, and the desalted air is supplied, so that the quality of the painting work and the concrete placing work at the construction site can be improved.

FIG. 2 is a front view showing the configuration of a construction site during repair of a main girder of a bridge in which the construction site is factoryized according to the present embodiment. FIG. 4 is a perspective view showing the configuration of a suspended scaffolding at a construction site when repairing a main girder of a bridge in which the construction site is factoryized according to the present embodiment. FIG. 10 is a perspective view showing a configuration in which the construction site is sealed with a sealing panel during repair of the main girder of the bridge in which the construction site is turned into a factory according to the present embodiment. FIG. 2 is a perspective view showing a configuration in which a construction site is sealed with a heat-shrinkable sheet at the time of repairing a main girder of a bridge in which the construction site is factoryized according to the present embodiment. FIG. 10 is a front view showing the configuration of the construction site during construction of the bridge piers of the factoryized construction site according to the present embodiment. FIG. 4 is a perspective view showing a configuration in which a construction site is sealed with a sealing panel during construction of a bridge pier in which the construction site is factoryized according to the present embodiment. FIG. 10 is a perspective view showing a configuration in which the construction site is sealed with a heat-shrinkable sheet at the time of construction of the bridge piers of the factoryized construction site according to the present embodiment. It is a graph explaining the relationship between the hardening time of various paints, and air temperature in the construction site which concerns on this embodiment.

The present invention comprises sealing means for isolating a construction site for construction or repair of civil engineering or building from an external space, and the construction site includes temperature and humidity control means for adjusting temperature and humidity, and dust reduction means for removing dust. and VOC concentration control means for controlling and adjusting the concentration of volatile organic compounds.

An example of an embodiment of factoryization of a construction site according to the present invention will be described below with reference to FIGS. 1 to 8. FIG. FIG. 1 is a front view showing the configuration of a construction site when repairing a main girder of a bridge in a factoryized construction site according to the present embodiment. FIG. 2 is a perspective view showing the configuration of a suspended scaffolding at a construction site when repairing a main girder of a bridge in a factoryized construction site according to the present embodiment. FIG. 3 is a perspective view showing a configuration in which the construction site is sealed with a sealing panel when repairing the main girder of the bridge in the construction site factory according to the present embodiment. FIG. 4 is a perspective view showing a configuration in which a construction site is sealed with a heat-shrinkable sheet during repair of a main girder of a bridge in which the construction site is turned into a factory according to the present embodiment. FIG. 5 is a front view showing the configuration of the construction site at the time of construction of the bridge piers of the factoryized construction site according to the present embodiment. FIG. 6 is a perspective view showing a configuration in which the construction site is sealed with a sealing panel at the time of construction of the bridge piers of the factoryized construction site according to the present embodiment. FIG. 7 is a perspective view showing a configuration in which the construction site is sealed with a heat-shrinkable sheet at the time of construction of the bridge piers of the factoryized construction site according to the present embodiment. FIG. 8 is a graph explaining the relationship between the curing time of various paints and the temperature at the construction site according to this embodiment.

(Factory conversion of construction sites during repair)
A case of repairing steel materials (such as I-shaped, H-shaped, and box-shaped steel materials), which is a main component of the main girder 10 of a bridge V having a railroad or a road on top, will be described below as an example.

As shown in FIG. 1, the factory construction of the construction site of the present embodiment is a place where repair work is performed on steel materials (I-type (H-type) steel materials in the figure) that are the main constituent members of the main girder 10 of the bridge V. A suspended scaffold, which is a partition member 20, is installed so as to surround the construction site G, which is a working space for workers. Then, the partition member 20 is covered with a covering (sealing panel P, heat-shrinkable sheet S). It is desirable that this construction site G secures a work space with a height that allows the worker H to move freely while standing. At this construction site G, the worker H performs surface preparation processing on the corroded portion of the steel material surface of the main girder 10 of the bridge V. As shown in FIG. Blasting, which is a representative method of this surface preparation treatment, is a treatment for cleaning corroded portions on the surface of the steel material with an abrasive ejected at high speed from a blasting hose. Then, the blasted corroded portion is coated with a resin (epoxy resin, fluororesin, etc.) paint or metal sprayed for corrosion prevention (including rust prevention).

For this reason, a power supply 11 is installed at the construction site G or its vicinity (above the bridge V in the figure). This power source 11 supplies electricity through a power cable to various equipment that requires a power source in order to perform various repair work. In addition, at the construction site G, a temperature and humidity control device 12 which is a temperature and humidity control means for adjusting the temperature and humidity inside the construction site G, a dust reduction device 13 which is a dust reduction means for removing dust inside the construction site G, A VOC concentration control device 14, which is VOC concentration control means for controlling and adjusting the concentration of volatile organic compounds inside the construction site G, is installed.

A well-known desiccant dehumidifier is preferably used as the temperature/humidity control device 12 . The desiccant dehumidifier uses a dehumidifying rotor, which is made by chemically synthesizing silica gel inside a honeycomb, as its core, and dehumidifies the air in the construction site G by adsorbing moisture with this desiccant rotor. Further, the desiccant dehumidifier is provided with a regenerative heater so that the temperature in the construction site G can be adjusted. When the bridge V is installed near the sea, a desalination filter is attached to the desiccant dehumidifier to remove salt from the air supplied to the construction site G from the outside. This salt removal filter functions as the salt removal means of this embodiment. The salt removal means is not limited to the salt removal filter, and may be any device that has the function of removing salt from the air supplied to the construction site G from the outside. Moreover, the temperature/humidity control device 12 is not limited to a desiccant dehumidifier as long as it can adjust the temperature and humidity of the air in the construction site G and desalinate the air.

A well-known wet scrubber is preferably used as the dust reduction device 13 . The wet scrubber efficiently collects dust, deodorizes, and absorbs gas from the air in the construction site G by causing the dust-laden air to be in a gas-liquid phase. The dust reduction device 13 is not limited to a wet scrubber as long as it performs dust collection, deodorization, and gas absorption from the air in the construction site G.

As the VOC concentration control device 14, a well-known VOC concentration device is preferably used. The VOC concentrator uses a rotor containing hydrophobic zeolite as its core, and the rotor efficiently purifies the air in the construction site G by adsorbing, concentrating and removing VOCs (volatile organic compounds). . Note that the VOC concentration control device 14 is not limited to a VOC concentration device as long as it can adsorb and remove VOCs from the air in the construction site G.

In FIG. 1, the power supply 11 is arranged outside the construction site G, the temperature and humidity control device 12 as temperature and humidity control means, the dust reduction device 13 as dust reduction means, and the VOC concentration control means as VOC concentration control means. Although the configuration in which the management device 14 is arranged inside the construction site G has been described, the present invention is not limited to this. The inside of the construction site G may be connected to the inside of the construction site G by an exhaust duct for discharging the air inside the G, an air supply duct for supplying air to the inside of the construction site G, or the like. In other words, the installation locations of various devices constituting various means can be appropriately changed according to the capacity of the construction site G.

When repairing the steel material that is the main component of the main girder 10 of the bridge V, as shown in FIG. A suspended scaffold as a partition member 20 is installed at the bottom of the . Suspended scaffolding as a partition member 20 includes a plurality of hanging members 21 suspended from both sides in the width direction of the bridge V or from the lower surface of the bridge V at predetermined intervals, and a floor structure connecting the hanging members 21 horizontally. 22 and a plurality of work plates 23 which are horizontally suspended between the floor assemblies 22 and used for the movement and work of workers. Suspended scaffolding as the partition member 20 is installed across the bridge piers L, L of the bridge V. As shown in FIG.

Next, as shown in FIG. 3, a plurality of sealing panels P are erected on the upper surface of the work plate 23 so as to surround the main girder 10 to be repaired by the worker along the inner side of the hanging member 21 . The sealing panel P is obtained by stretching a plurality of stages (upper and lower two stages in FIG. 3) of upholstery materials B made of highly airtight and waterproof sheets or resin thin plates on a frame F. As shown in FIG. Moreover, as a material for the upholstery B, a material having translucency is desirable. In this way, by using the upholstery material B, which is a sheet or a thin resin plate having translucency and high airtightness and waterproofness, as the sealing panel P, the inside of the construction site G surrounded by the sealing panel P can be protected from the outside. Light can be taken in, and the number of lights provided in the construction site G can be minimized. In addition, the number of sealing panels P erected and attached to the inner side of the hanging member 21 can be appropriately changed according to the size (height) of the construction site G to be surrounded. Also, in FIG. 3, the plurality of sealing panels P are erected inside the suspension member 21, but the plurality of sealing panels P may be erected on the upper surface of the work plate 23 outside the suspension member 21. good.

Here, when a plurality of sealing panels P constituting the partition member 20 are installed, gaps may occur between the sealing panels P. In this case, the space between the sealing panels P may be filled with a sponge or the like to isolate and seal the construction site G from the external space. A heat-shrinkable sheet S (see FIG. 4), which will be described later, is attached between the sealing panels P, and the heat-shrinkable sheet S is heated with a predetermined heat gun or the like, so that the heat-shrinkable sheet S is welded and shrunk to seal the panel. You may make it seal between the panels P.

Further, as shown in FIG. 4, along the outer side of the hanging member 21 constituting the hanging scaffolding as the partition member 20, the heat-shrinkable sheet S is wound so as to surround the main girder 10 to be repaired by the operator. can be installed As the heat-shrinkable sheet S, a thin film having a predetermined thickness (for example, 0.3 mm) formed into a roll is preferably used. As the material of the heat-shrinkable sheet S, polyethylene having high airtightness and waterproofness is preferably used, and a translucent milky-white color is desirable. Moreover, the heat-shrinkable sheet S is flame-retardant (does not ignite) even when heated, and has the property of being welded and shrunk at a predetermined temperature (150 degrees Celsius) or higher when heated with a dedicated heat gun. Taking advantage of this characteristic, the heat-shrinkable sheet S is wound around the outside of the hanging member 21 and then heated with a special heat gun, so that the heat-shrinkable sheet S is welded and shrunk to seal the outside of the hanging member 21. As a result, the construction site G can be sealed off from the external space.

In this way, by sealing the construction site G with the heat-shrinkable sheet S having translucency and high airtightness and waterproofness, external light can be taken into the construction site G. The number of lights and the like can be minimized. The size (width, height, and length) of the heat-shrinkable sheet S can be appropriately changed according to the size of the space of the construction site G surrounded by the partition member 20 (that is, the construction range). In FIG. 4, the heat-shrinkable sheet S is wound around the hanging material 21, but the heat-shrinkable sheet S may be wound inside the hanging material 21 so as to surround the construction site G.

As described above, according to the factoryization of the construction site of the present embodiment, the steel materials (I-type (H-type) steel materials in the figure), which are the main constituent members of the main girder 10 of the bridge V, are repaired. In this case, a suspended scaffolding that is a partition member 20 is installed, and a plurality of sealing panels P are placed on the upper surface of the work plate 23 so as to surround the construction site G outside or inside the suspension member 21 that constitutes the partition member 20. By erecting or covering with a heat-shrinkable sheet S so as to surround the construction site G on the outside or inside of the suspension material 21, The bottom surface can form a construction site G as a worker's work space sealed off from the outside by the work plate 23 .

In the sealed construction site G, temperature and humidity control means (temperature and humidity control device 12) for adjusting temperature and humidity, dust reduction means (dust reduction device 13) for removing dust, concentration of volatile organic compounds VOC concentration control means (VOC concentration control device 14) for managing and adjusting the VOC concentration is provided. As a result, the construction site G, where repair work (removal of old paint and rust, subsequent repainting, etc.), which was conventionally performed in the open air, is carried out, is performed as if it were in a factory sealed off from the outside space. It can be space. As a result, at the construction site G where the repair work is to be carried out, it is possible to minimize fluctuations in the schedule of the construction site due to the effects of climate and weather. Furthermore, since the worker who performs the repair work at the construction site G can perform the repair work in a safe working environment such as a closed factory, the safety of the worker and the efficiency of the repair work are improved. Furthermore, it is possible to improve the quality of coating and the like.

(Factory conversion of construction sites for new construction)
A case of newly constructing a bridge pier L of a bridge V over which a railroad or a road is provided will be described below as an example.

As shown in FIG. 5, the factoryization of the construction site of the present embodiment involves erecting a scaffolding as a partition member 20 so as to surround the pier L before newly constructing the pier L of the bridge V. Form the site G. Then, the outside or inside of the partition member 20 is covered with a cover (sealing panel P, heat-shrinkable sheet S). At this construction site G, the worker H performs the construction work of the bridge pier L (placement of foundation concrete to be the foundation, construction of the bridge pier L, etc.).

A construction site G is equipped with a power source 11 (a vehicle equipped with a generator in the figure) that supplies power to equipment for performing various construction works. In addition, at the construction site G, a temperature and humidity control device 12 which is a temperature and humidity control means for adjusting the temperature and humidity inside the construction site G, a dust reduction device 13 which is a dust reduction means for removing dust inside the construction site G, A VOC concentration control device 14, which is VOC concentration control means for controlling and adjusting the concentration of volatile organic compounds (VOC) inside the construction site G, is installed.

The temperature/humidity control device 12, the dust reduction device 13, and the VOC concentration control device 14 shown in the figure correspond to the scale of the construction site G, and have the same functions as those described in the repair work described above. Therefore, the description is omitted.

5, a power supply 11 (in the figure, a vehicle equipped with a generator), a temperature/humidity control device 12 as temperature/humidity control means, a dust reduction device 13 as dust reduction means, and a VOC concentration control means. Although the concentration control device 14 is arranged inside the construction site G, the present invention is not limited to this. The inside of the construction site G may be connected to the inside of the construction site G by an exhaust duct for discharging the air inside the construction site G, an air supply duct for supplying air to the inside of the construction site G, or the like. Also, the power source 11 (a vehicle equipped with a generator in the drawing) can be installed outside the construction site G to supply electricity to equipment for performing various construction work via power cables. In other words, the installation locations of various devices constituting various means can be appropriately changed according to the capacity of the construction site G.

When carrying out construction work for newly constructing the pier L of the bridge V, first, as shown in FIG. The scaffolding used as the partition member 20 here is a well-known single-tube scaffolding, framework scaffolding, or pillar scaffolding. It is composed of members for work (strut 21, floor assembly 22, work plate 23, etc.).

As shown in FIG. 6, a plurality of sealing panels P are erected along the outside of the scaffolding as the partition member 20 . At this time, the ceiling of the construction site G surrounded by the partition member 20 isolates the upper part of the construction site G from the external space by placing the roof member Y on the upper part of the partition member 20 . It is also possible to assemble the partition member 20 horizontally on the ceiling of the construction site G and attach a plurality of sealing panels P there, but this would require a large amount of work in assembling the partition member 20 and installing a plurality of sealing panels P. process may be required. For this reason, a roof member Y corresponding to the construction site G is separately assembled in advance, and the roof member Y is placed on the upper part of the partition member 20 to form the ceiling of the construction site G.

Here, when a plurality of sealing panels P are erected along the outside of the partition member 20, gaps may occur between the sealing panels P in some cases. In this case, by filling this gap with a sponge or the like, the side surface of the construction site G may be isolated from the external space and sealed. In addition, a heat-shrinkable sheet S is attached to the gaps between the plurality of sealing panels P, and by heating this heat-shrinkable sheet S with a predetermined heat gun or the like, the heat-shrinkable sheet is welded and shrunk to form the plurality of sealing panels P. The gap between them may be sealed. In FIG. 6, the plurality of sealing panels P are erected along the outer side of the scaffolding as the partition member 20, but the plurality of sealing panels P are erected along the inner side of the scaffolding as the partition member 20. You may

Alternatively, as shown in FIG. 7, a heat-shrinkable sheet S can be wound along the outer side of the scaffolding as the partition member 20 to be attached. After that, by heating with a dedicated heat gun, the heat-shrinkable sheet S is welded and shrunk to seal the outside of the partition member 20 and seal off the side of the construction site G from the external space. In this case also, a partition member 20 is assembled horizontally on the ceiling of the construction site G, and the heat-shrinkable sheet S is wound around and attached to the outside (upper surface) of the partition member 20. After that, the construction site G is heated by a dedicated heat gun. Although it is possible to form a ceiling, this may require a large number of processes for assembling the partition member 20 and winding the heat-shrinkable sheet S. For this reason, a roof member Y corresponding to the construction site G is separately assembled in advance, and the roof member Y is placed on the upper part of the partition member 20 to form the ceiling of the construction site G. In FIG. 7, the heat-shrinkable sheet S is wound along the outside of the scaffolding as the partitioning member 20 and attached. may be installed.

In this way, by sealing the construction site G with the sealing panel P and the heat-shrinkable sheet S, which are translucent and highly airtight and waterproof, external light can be taken into the construction site G, The number of lights provided in G can be minimized.

Here, in the construction work for newly constructing the pier L of the bridge V, when setting up a scaffolding as the partition member 20 so as to surround the pier L, the partition member 20 is installed according to the progress of the construction work. You can change the height of the scaffolding. Specifically, in the construction of the bridge pier L, the construction of the foundation portion K on the ground for erecting the bridge pier L is the first step. In this case, the height of the partition member 20 forming the construction site G may be such that the worker can work on the foundation K while standing. Then, according to the progress of the construction of the bridge piers L, the height of the partition member 20 forming the construction site G is increased, and finally, as shown in FIG. , the height of the partition member 20 is increased stepwise. In this way, by making the construction site G, which is the work space of the worker, the minimum necessary work space, for example, without applying an extra load to the temperature and humidity control device 12 that adjusts the temperature and humidity, and You can also measure power consumption.

As described above, according to the factoryization of the construction site of the present embodiment, when constructing a new bridge pier L of the bridge V, a scaffolding that is the partition member 20 is installed, A plurality of sealing panels P are erected so as to surround the construction site G inside, or a heat-shrinkable sheet S is covered outside or inside the partition member 20 so as to surround the construction site G, so that the upper surface is a roof member. By means of Y, a construction site G can be formed as a worker's work space sealed off from the outside by a plurality of sealing panels P or heat-shrinkable sheets S on the side surfaces and the ground on the bottom surface.

In the sealed construction site G, temperature and humidity control means (temperature and humidity control device 12) for adjusting temperature and humidity, dust reduction means (dust reduction device 13) for removing dust, concentration of volatile organic compounds VOC concentration control means (VOC concentration control device 14) for managing and adjusting the VOC concentration is provided. As a result, the construction site G, where the construction work (such as placing the concrete that constitutes the bridge pier L), which was conventionally performed in the open air, is performed is transformed into a work space as if it were inside a factory sealed off from the outside space. can do. As a result, at the construction site G where construction work is carried out, it is possible to minimize fluctuations in the schedule of the construction site due to the effects of climate and weather. Furthermore, since the worker who performs the repair work at the construction site G can perform the repair work in a safe working environment such as a closed factory, the safety of the worker and the efficiency of the repair work are improved. Furthermore, it is possible to improve the quality of the building (concrete to be placed, etc.).

Here, the relationship between the curing time of various paints and the temperature at the construction site G according to this embodiment will be described with reference to FIG. As shown in FIG. 8, depending on the type of paint, the curing time of the paint greatly changes depending on the air temperature. For example, taking a lead-based anticorrosive paint as an example, if the temperature at the construction site G is 5° C., it takes about 45 hours to harden. On the other hand, when the temperature at the construction site G is 20° C., the curing time is about 22 hours, which is about half. In other types of paints, the curing time of the paints certainly shortens as the air temperature rises.

Since the temperature and humidity control device 12 for adjusting the temperature and humidity is installed at the construction site G sealed by the factoryization of the construction site in this embodiment, the temperature of the construction site G is maintained at a constant temperature (for example, 20 °C). As a result, the curing time of various paints can be reliably shortened, so that construction work and repair work can be completed in a fixed construction period.

In addition, there are paints whose use is restricted depending on the temperature (air temperature) and humidity of the construction site G. As an example, when the temperature is below 5°C (or 10°C) or the humidity (relative humidity) is above 85%, many types of paint may not be usable. If the air temperature is below 5°C, depending on the type of paint, it may be necessary to use a dedicated low-temperature paint. In addition, even if it can be used, the coating interval (1 to 10 days) in the case of repeated coating must be the maximum (for example, 10 days).

On the other hand, since the temperature and humidity control device 12 is installed in the construction site G sealed by the factoryization of the construction site of the present embodiment, the temperature of the construction site G is kept at a constant temperature (for example, 20° C.). , the humidity can be kept within a predetermined range (for example, 50% to 80%). As a result, it is possible to minimize the painting interval (1 to 10 days) when painting repeatedly without considering the type of paint used, and to minimize the construction period (for example, 1 day) in construction and repair work. can be shortened.

As described above, according to the factoryization of the construction site of this embodiment, since the construction site G, which is the work space of the worker, is provided with a sealing means for blocking the external space, repair work of the existing building is prevented. At the construction site G where new construction work is being carried out, it is possible to minimize fluctuations in the schedule of the construction site due to the effects of climate and weather. In other words, there is no delay in the work process due to climate or weather. Furthermore, at the sealed construction site G, there are a temperature and humidity control device 12 for adjusting temperature and humidity, a dust reduction device 13 for removing dust, and a VOC concentration control device 14 for controlling and adjusting the concentration of volatile organic compounds (VOC). is installed, the working environment of the worker at the construction site G can be improved. As a result, the worker can perform the repair work at the construction site G in a work environment like a closed factory, improving the safety of the worker and improving the efficiency of the repair work, as well as painting, It can contribute to improving the quality of concrete.

In addition, since it is sealed with a sealing panel P or a heat shrinkable sheet S that has translucency and has high airtightness and waterproofness, which is used as a sealing means for factoryization of the construction site of this embodiment, construction such as dust from the outside is prevented. Intrusion into the site G can be prevented, and the construction site G can be maintained in a clean environment.

Further, as described above, in the case of newly constructing the pier L of the bridge V, a scaffolding is installed as the partition member 20 so as to surround the construction site G, and the outside or inside of the side surface of the partition member 20 is installed. By sealing with a plurality of highly airtight sealing panels P and heat-shrinkable sheets S, the construction site G can be isolated from the external space to form a sealed space.

In addition, since the sealing panel P and the heat-shrinkable sheet S used as sealing means have the function of cutting ultraviolet rays, various members during construction or repair of the internal space of the construction site G are effectively protected from sunburn due to sunlight. There is

Further, in the above-described embodiment, the case where the bridge pier L of the bridge V is newly constructed has been described as an example of factoryization of the construction site, but the present invention is not limited to this. A house, an apartment, a condominium, etc.) and other construction sites may also use the factoryization of the construction site of the present invention.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims.・Changes are possible.

10 main girder 11 power supply 12 temperature and humidity control device 13 dust reduction device 14 VOC concentration control device 20 partition member 21 hanging material, strut 22 floor assembly 23 work board B tension material G construction site F frame H worker L pier P sealing panel S Heat shrink sheet V Bridge Y Roof member

Claims (2)

A construction site factory system for repairing main girders provided on bridge piers ,
a partition member that surrounds the main girder and is installed between the piers of the bridge to form a suspended scaffold and form a work space for workers;
a cover that covers the partition member so as to surround the main girder and isolates the work space from an external space;
a temperature and humidity control means installed in the work space for adjusting the temperature and humidity inside the work space;
A construction site factoryization system characterized by comprising: At the construction site,
Dust reduction means for removing dust inside the work space;
VOC concentration control means for controlling and adjusting the concentration of volatile organic compounds inside the working space;
a salt removal means attached to the temperature and humidity control means for removing salt in the air;
The factoryization system for a construction site according to claim 1, characterized by comprising at least one of:

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