CN105442839A - Erecting method of cantilever structure formwork bent - Google Patents
Erecting method of cantilever structure formwork bent Download PDFInfo
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- CN105442839A CN105442839A CN201510560562.6A CN201510560562A CN105442839A CN 105442839 A CN105442839 A CN 105442839A CN 201510560562 A CN201510560562 A CN 201510560562A CN 105442839 A CN105442839 A CN 105442839A
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Abstract
The invention relates to an erecting method of a cantilever structure formwork bent and belongs to the technical field of building construction. The problem that an existing cantilever structure formwork bent is difficult to erect and high in construction cost is solved. The erecting method comprises the steps that a cantilever platform steel supporting structure is spliced and welded on the ground at first; an embedded part is arranged on a building structure beam in the high altitude; the steel supporting structure is hoisted and is welded and fixed to the embedded part, thereby being fixed to a building structure floor beam; a reinforcing measure is provided, a hoisting ring is embedded on a sealing beam above the cantilever main steel beam to fix an upper pull rod, and the lower end of the upper pull rod is connected with the cantilever main steel beam in the steel supporting structure; auxiliary beams are laid above the cantilever main steel beam at intervals, finally, the gaps between the auxiliary beams are filled with square pillars and covered with a formwork, and therefore construction of a cantilever platform is completed; an operator erects a bent system composed of horizontal rods and vertical rods on the cantilever platform and carries out reliable pulling, and therefore the cantilever structure formwork bent is formed.
Description
Technical field
The present invention relates to technical field of building construction, particularly a kind of erection method of cantilevered structure template framed bent.
Background technology
In recent years, in order to give prominence to the requirement of the effect of elevation of building moulding and the expansion of high-rise upper space when realizing architectural design, high level encorbelment concrete structure, component building operations get more and more.Because concrete structure deadweight of encorbelmenting is far longer than the weight of the components such as steel work, thus bring certain difficulty to the design of the template framed bent of cantilevered structure component, construction.Template framed bent has related specifications standard in China, but does not still have Its Relevant Technology Standards at present for the template framed bent of encorbelmenting built in high-altitude.
Current existing cantilevered structure template framed bent construction method mainly comprises following two kinds:
The first, land template framed bent system, namely adopt framed bent to set up from floor of encorbelmenting to ground, adopt two vertical rod within the scope of certain altitude, run into and have basement situation, framed bent is set up need from basement bottom board.The limitation of this kind of method is the rising along with floor of encorbelmenting, and framed bent scaffolding height strengthens thereupon, and corresponding construction cost and degree of danger increase thereupon.
Second, adopt overhanging type steel method, the supporting form of current employing is unreasonable, support arrangement spacing is comparatively intensive, required steel material is larger, the costs such as transport, processing and artificial welding increase thereupon, and for the larger structure of cantilever span, above-mentioned supporting form cannot meet the requirement of construction speed and site safety.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present invention, and should not be considered as admitting or imply in any form that this information is the known prior aries of persons skilled in the art.
Summary of the invention
The object of the present invention is to provide a kind of erection method of cantilevered structure template framed bent, large for solving existing cantilevered structure construction method difficulty, the problem that construction cost is high.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
An erection method for cantilevered structure template framed bent, by construction overhanging steel structure platform, makes template framed bent set up on overhang steel platform, comprises the steps:
Step one, complete steel support structure ground spliced, steel support structure described in every Pin comprises encorbelment main girder steel and two diagonal braces;
Step 2, built-in fitting is set in the structural beams of building structure n-th layer and N-1 layer, N be greater than 1 natural number;
Step 3, lift steel support structure in described step one, the built-in fitting in described steel support structure and described step 2 is welded and fixed;
Step 4, on the sealing beam of N+1 sandwich beam, bury suspension ring underground;
Step 5, upper connecting rod is set; One end of described upper connecting rod is fixedly connected with described suspension ring, and the other end of described upper connecting rod is connected with described suspension ring of encorbelmenting on main girder steel;
Step 6, above described main girder steel of encorbelmenting, time girder steel is laid at interval, and sets up the template framed bent system be made up of horizon bar, vertical rod.
Preferably, described diagonal brace is fixedly connected with by welding manner with described bottom of encorbelmenting main girder steel.
Preferably, described step 6 is also included between described girder steel and fills flitch.
Preferably, in described step one, adjacent two level intervals of encorbelmenting between main girder steel are 3.0-3.2m.
Preferably, described built-in fitting is fixedly connected with the described two-sided full weld of main girder steel of encorbelmenting.
Preferably, described upper connecting rod is wire rope.
Preferably, wooden form is laid in the top that described step 6 is also included in described flitch and secondary girder steel, and the thickness of described wooden form is 18mm.
Preferably, also comprise safety net, outside the bottom of main girder steel of encorbelmenting described in described safety net is arranged at respectively and cantilevered structure template framed bent.
Compared with prior art, the technique effect that the present invention is useful is: the erection method of a kind of cantilevered structure template framed bent provided by the invention, first the assembled of steel support structure and construction is completed on ground, then lift steel support structure and by the built-in fitting be arranged on building structure floor beam, this steel support structure be fixedly installed on building structure floor beam, then on the structural floor beam that main girder steel top of encorbelmenting is adjacent, upper connecting rod is set as bracing means, being encorbelmented securely by steel support structure is arranged in building structure, form the outrigger platform of safety, last operation workman sets up vertical rod and horizon bar on outrigger platform, thus form the template framed bent of encorbelmenting and arranging.The erection method of this cantilevered structure template framed bent, owing to completing the assembled of steel support structure and welding on ground, adopt the steel support structure of tower crane lifting welding fabrication, and by built-in fitting this steel support structure encorbelmented and be arranged on building structure floor structure beam, form outrigger platform, greatly saved engineering time and tower crane occupancy that framed bent sets up, decreased construction cost, also reduce work high above the ground, improve the safety of template framed bent erection construction.And, two supports are set encorbelmenting to encorbelment under main girder steel, effectively reduce amount of deflection and the stress of main girder steel of encorbelmenting, then increase the spacing of steel support structure, saved material.In addition, utilizing the material of on-the-spot builder's jack, almost without the need to additionally adding section steel material, greatly reducing construction cost.
Accompanying drawing explanation
Fig. 1 is the floor map of the erection method of the cantilevered structure template framed bent of one embodiment of the invention;
Fig. 2 is the 1-1 sectional drawing of Fig. 1.
Main Reference Numerals illustrates:
10-encorbelments main girder steel; 20-seals beam; 30-upper connecting rod; 40-diagonal brace; 50-girder steel; 61-vertical rod, 62-horizon bar; 70-safety net.
Detailed description of the invention
Be described in further detail below in conjunction with the erection method of the drawings and specific embodiments to the cantilevered structure template framed bent that the present invention proposes.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.For sake of convenience, hereinafter described " on ", D score is consistent with the upper and lower direction of accompanying drawing, but this can not become the restriction of technical solution of the present invention.
The invention provides a kind of erection method of high-supported formwork framed bent, under the prerequisite ensureing construction safety, reduce construction cost and difficulty of construction, shorten construction period, and material can reuse, environmental protection.
The erection method of cantilevered structure template framed bent of the present invention is described in detail below in conjunction with Fig. 1 and Fig. 2.
Embodiment one
As depicted in figs. 1 and 2, a kind of erection method of cantilevered structure template framed bent, by construction overhanging steel structure platform, makes template framed bent set up on overhang steel platform, comprises the steps:
S001: complete steel support structure ground spliced, every Pin steel support structure comprises encorbelment main girder steel 10 and two diagonal braces 40.
S002: built-in fitting is set in the structural beams of building structure n-th layer and N-1 layer, N be greater than 1 natural number.In cantilevered structure template framed bent erection construction in the present embodiment, N equals 12.
S003: lifting steel support structure, be welded and fixed by the built-in fitting in steel support structure and step 2, one end of diagonal brace 40 is fixedly connected with main girder steel 10 of encorbelmenting, and the other end of diagonal brace 40 is fixedly connected with the structural beams built-in fitting of N-1 layer.
S004: bury suspension ring (not shown) on the sealing beam 20 of N+1 sandwich beam underground.
S005: upper connecting rod 30 is set; One end of upper connecting rod 30 is connected with suspension ring, and the other end of upper connecting rod 30 is connected with the suspension ring that main girder steel 10 of encorbelmenting welds.
S006: time girder steel 50 is laid at interval above main girder steel 10 of encorbelmenting, and sets up the frame construction be made up of vertical rod 61 and horizon bar 62, thus form cantilevered structure template framed bent.
Specifically, the erection method of the cantilevered structure template framed bent of the embodiment of the present invention, first the assembled of steel support structure and welding is completed on ground, adopt tower crane by steel support structure hoisted in position of every Pin welding fabrication, engineering time and tower crane occupancy that framed bent sets up greatly are saved, decrease construction cost, also reduce work high above the ground, improve the safety of cantilevered structure template framed bent erection construction.And, encorbelment in main girder steel bottom of encorbelmenting and two supports are set, effectively reduce amount of deflection and the stress of main girder steel of encorbelmenting, then increase the spacing of bracing members, saved material.In addition, utilizing the section steel material of on-the-spot builder's jack, almost without the need to additionally adding section steel material, greatly reducing construction cost.
Preferably, diagonal brace 40 is fixedly connected with by welding manner with the bottom of main girder steel 10 of encorbelmenting.
Further, be also included in step S006 between the adjacent secondary girder steel 50 of horizontal direction and fill flitch, afterwards, cover wooden form.Its object is to, the cantilevered structure for plane rule of encorbelmenting can convenient construction personnel walking, and the cantilevered structure for plane irregularity of encorbelmenting facilitates template framed bent to set up and the transmission of vertical load of constructing.
Especially, by changing supporting form, adjacent two level intervals of encorbelmenting between main girder steel 10 are 3.0m-3.2m, increase 2-3 times of spacing, thus save section steel material, reduce cost than traditional approach.Increase load bang path by the mode arranging upper connecting rod 30, upper connecting rod 30 is wire rope, and this wire rope is by 6 bursts of twistings, and per share have 12 steel wires.
Main girder steel 10 of encorbelmenting is fixedly connected with the two-sided full weld of building structure floor embedded part by built-in fitting, be that the backing plate that the bolt of M18 is thick with 5mm is connected with embedded part bolt by model simultaneously, thus guarantee is encorbelmented, effective transmission of main girder steel 10 load, reaches the effect be reliably connected with structural floor then.
In order to provide the construction environment of a safety to the operator setting up framed bent, convenient construction personnel walk on outrigger platform, and wooden form is laid in the top that step S006 is also included in flitch and secondary girder steel 50, and the thickness of wooden form is 18mm.In order to improve the safety of the outrigger platform based on main girder steel 10 of encorbelmenting further, outside the bottom and cantilevered structure template framed bent of main girder steel 10 of encorbelmenting, be also provided with safety net 70, safety net 70 is that the reinforcing bar of 25mm is fixedly connected with diagonal brace 40 by diameter.
In sum, the erection method of cantilevered structure template framed bent of the present invention, first outrigger platform is set on building structure floor structure beam, for the operator setting up cantilevered structure template framed bent provides the construction environment of a safety, and then scaffold building method conveniently completes the connection of vertical rod and horizon bar, thus complete setting up of cantilevered structure template framed bent.Specifically, complete steel support structure ground spliced, every Pin steel support structure comprises encorbelment main girder steel and two diagonal braces; Secondly built-in fitting is set on the architecture beam being positioned at high-altitude; Then lift steel support structure and be welded and fixed with built-in fitting, thus steel support structure being fixed on building structure floor structure beam; Then provide reinforcement measure, the sealing beam above main girder steel of encorbelmenting is buried suspension ring underground in order to fixing upper connecting rod, the lower end of upper connecting rod is connected with the suspension ring of encorbelmenting on main girder steel in steel support structure; Then above main girder steel of encorbelmenting, secondary beam is laid at interval, flitch is finally adopted to fill and template covering, namely complete the construction of outrigger platform, operating personnel set up the frame construction that is made up of vertical rod and horizon bar and carry out reliable drawknot on this outrigger platform, namely form cantilevered structure template framed bent.The erection method of cantilevered structure template framed bent of the present invention, first the assembled of steel support structure and welding is completed on ground, adopt tower crane by steel support structure hoisted in position of every Pin welding fabrication, engineering time and tower crane occupancy that framed bent sets up greatly are saved, decrease construction cost, also reduce work high above the ground, improve the safety of template framed bent erection construction.And, two supports are set encorbelmenting to encorbelment under main girder steel, effectively reduce amount of deflection and the stress of main girder steel of encorbelmenting, then increase the spacing of steel support structure, saved material.In addition, utilizing the material of on-the-spot builder's jack, almost without the need to additionally adding section steel material, greatly reducing construction cost.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (8)
1. an erection method for cantilevered structure template framed bent, by construction overhanging steel structure platform, makes template framed bent set up on overhang steel platform, it is characterized in that, comprise the steps:
Step one, complete steel support structure ground spliced, steel support structure described in every Pin comprises encorbelment main girder steel and two diagonal braces;
Step 2, built-in fitting is set in the structural beams of building structure n-th layer and N-1 layer, N be greater than 1 natural number;
Step 3, lift steel support structure in described step one, the built-in fitting in described steel support structure and described step 2 is welded and fixed;
Step 4, on the sealing beam of N+1 sandwich beam, bury suspension ring underground;
Step 5, upper connecting rod is set; One end of described upper connecting rod is fixedly connected with described suspension ring, and the other end of described upper connecting rod is connected with described suspension ring of encorbelmenting on main girder steel;
Step 6, above described main girder steel of encorbelmenting, time girder steel is laid at interval, and sets up the template framed bent system be made up of horizon bar, vertical rod.
2. the erection method of cantilevered structure template framed bent as claimed in claim 1, it is characterized in that, described diagonal brace is fixedly connected with by welding manner with described bottom of encorbelmenting main girder steel.
3. the erection method of cantilevered structure template framed bent as claimed in claim 1, it is characterized in that, described step 6 is also included between described girder steel and fills flitch.
4. the erection method of cantilevered structure template framed bent as claimed in claim 1, it is characterized in that, in described step one, adjacent two level intervals of encorbelmenting between main girder steel are 3.0-3.2m.
5. the erection method of cantilevered structure template framed bent as claimed in claim 1, it is characterized in that, described built-in fitting is fixedly connected with the described two-sided full weld of main girder steel of encorbelmenting.
6. the erection method of cantilevered structure template framed bent as claimed in claim 1, it is characterized in that, described upper connecting rod is wire rope.
7. the erection method of cantilevered structure template framed bent as claimed in claim 3, is characterized in that, wooden form is laid in the top that described step 6 is also included in described flitch and secondary girder steel, and the thickness of described wooden form is 18mm.
8. the erection method of cantilevered structure template framed bent as claimed in claim 1, is characterized in that, also comprise safety net, outside the bottom of main girder steel of encorbelmenting described in described safety net is arranged at respectively and cantilevered structure template framed bent.
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| CN201510560562.6A CN105442839A (en) | 2015-09-06 | 2015-09-06 | Erecting method of cantilever structure formwork bent |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106968432A (en) * | 2017-04-17 | 2017-07-21 | 中国十七冶集团有限公司 | Super large cantilever balcony structure form bracing system and its construction method |
| CN107355075A (en) * | 2017-07-28 | 2017-11-17 | 南通华新建工集团有限公司 | Overlength cantilevered structure shuttering supporting steel truss and its construction method |
| CN108005373A (en) * | 2018-01-09 | 2018-05-08 | 中国建筑第二工程局有限公司 | Integrated lifting platform system and assembling method thereof |
| CN108894483A (en) * | 2018-08-31 | 2018-11-27 | 中建四局第四建筑工程有限公司 | A kind of suspended structural support system and its construction method |
| CN109488022A (en) * | 2018-11-05 | 2019-03-19 | 中建四局第六建筑工程有限公司 | A kind of steel platform and its installation method for corridor construction |
| CN110424733A (en) * | 2019-06-28 | 2019-11-08 | 中国十七冶集团有限公司 | A kind of high-altitude long-span overhung exempts from floor-type support structure and its construction method |
| CN110700543A (en) * | 2019-10-16 | 2020-01-17 | 上海建工一建集团有限公司 | Steel truss inclined strut system structure with section steel cantilever and construction method thereof |
| CN110821133A (en) * | 2019-11-06 | 2020-02-21 | 上海建工七建集团有限公司 | Externally hung operating steel platform and construction method thereof |
| CN112267567A (en) * | 2020-09-02 | 2021-01-26 | 中建三局集团有限公司 | Synchronous construction method for SRC column and outer frame structure of super high-rise building |
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| CN110821133A (en) * | 2019-11-06 | 2020-02-21 | 上海建工七建集团有限公司 | Externally hung operating steel platform and construction method thereof |
| CN110821133B (en) * | 2019-11-06 | 2023-11-10 | 上海建工七建集团有限公司 | Externally-hung operation steel platform and construction method thereof |
| CN112267567A (en) * | 2020-09-02 | 2021-01-26 | 中建三局集团有限公司 | Synchronous construction method for SRC column and outer frame structure of super high-rise building |
| CN112267567B (en) * | 2020-09-02 | 2022-06-14 | 中建三局集团有限公司 | Synchronous construction method for SRC column and outer frame structure of super high-rise building |
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Application publication date: 20160330 |