CN117468329A - Construction efficient U-shaped segmental beam structure for urban rail transit and storage and transportation method - Google Patents
Construction efficient U-shaped segmental beam structure for urban rail transit and storage and transportation method Download PDFInfo
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- CN117468329A CN117468329A CN202311729211.4A CN202311729211A CN117468329A CN 117468329 A CN117468329 A CN 117468329A CN 202311729211 A CN202311729211 A CN 202311729211A CN 117468329 A CN117468329 A CN 117468329A
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- 238000010276 construction Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 238000004891 communication Methods 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 14
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/003—Arrangement of tracks on bridges or in tunnels
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a U-shaped section beam structure for constructing efficient urban rail transit and a storage and transportation method, comprising midspan sections; the midspan section is composed of a first bottom plate, a first web plate and a first wing plate; the both sides of first bottom plate are connected with the first web that inclines outward, and first pterygoid lamina is located first web top surface and extends outward, and the upper and lower surface of first pterygoid lamina is the horizontal plane. The invention solves the problems of large occupied area of the prefabricated field of the U-shaped section beam, low transportation efficiency, aggravation of urban road congestion, high construction and transportation cost of the prefabricated field and the like.
Description
Technical Field
The invention relates to the technical field of constructional engineering. More particularly, the invention relates to a U-shaped section beam structure for constructing efficient urban rail transit and a storage and transportation method.
Background
Urban rail transit has two laying modes: underground lines and overhead lines. The construction cost and the operation cost of the overhead line are lower than those of the underground line, and most suburban rail transit lines in large and medium-sized cities at home and abroad are planned to the overhead line. In the beam type selection of overhead lines, the U-shaped segmental beam has the advantages of high quality, high efficiency, energy conservation, environmental protection and the like of the assembled bridge, has the characteristics of safety, attractive appearance, high noise reduction, high section utilization rate and the like, and is an ideal urban rail transit beam type. The development and application of U-section beam technology is internationally in a rapidly advancing stage.
The traditional U-shaped section beam is in a shape of a thin wall of a lower bearing type opening, a U-shaped cross section is formed by a bottom plate, a web plate and a flange plate, and the cross section of the common U-shaped section beam is shown in figure 1.
The width of the flange plate in the traditional section form 1 is smaller, the inner width of the top opening is lower than the outer width of the bottom plate, and the requirement of double-layer storage cannot be met; the width of flange plate has been widened to section 2, 3, through special support design, can satisfy the demand that double-deck deposited generally, but along with depositing the increase of layer number, on the one hand highly, stability is relatively poor, and on the other hand lower floor's beam body web outside and bottom plate bear great tensile stress, generally can not deposit three-layer and more. Therefore, for the U-shaped segment beam prefabrication site, large area land is required to be rented for storing the prefabricated segment beams in order to reach the rated storage Liang Nengli, thereby increasing the cost investment for construction of the prefabrication site.
After the storage of the U-shaped section beam is expired, the U-shaped section beam is transported to a construction site for erection through a flat trailer. Due to the characteristics of the section of the current U-shaped section beam, the problem of limited clearance of urban roads can be solved by adopting a double-layer storage and transportation mode, so that only single-truss transportation can be realized. Therefore, the transportation efficiency of the U-shaped section beam is low, and the original traffic capacity of the urban road is reduced due to the increase of the number of vehicles, the large vehicle type and the low transportation speed.
Disclosure of Invention
The invention aims to provide a U-shaped section beam which is reasonable in beam stress, comprehensive in function and high in construction efficiency from the viewpoint of optimal cost of the whole life cycle, and solves the problems of large occupied area of a prefabricated field of the U-shaped section beam, low transportation efficiency, aggravation of urban road congestion, high construction and transportation cost of the prefabricated field and the like.
The technical scheme adopted by the invention for solving the technical problem is as follows: a U-shaped section beam structure for constructing efficient urban rail transit comprises a midspan section; the midspan section is composed of a first bottom plate, a first web plate and a first wing plate; the both sides of first bottom plate are connected with the first web that inclines outward, and first pterygoid lamina is located first web top surface and extends outward, and the upper and lower surface of first pterygoid lamina is the horizontal plane.
Preferably, the bottom surface of the first bottom plate is a horizontal plane, and the top surface of the first bottom plate is provided with a bidirectional or unidirectional transverse slope; the first bottom plate is internally provided with a plurality of horizontally arranged prestressed pipes; a shear key is arranged in the middle of the end face of the first bottom plate;
the cable bracket is connected with the embedded channels through T-shaped bolts and is used for supporting the signal communication cable; the first web plate comprises a plurality of prestressed pipes; a plurality of shear keys are arranged on the end face of the first web at intervals;
a widening platform of a steel structure is arranged at the junction of the first wing plate and the first web plate; the outer side of the upper surface of the first wing plate is provided with a guardrail, and the guardrail is connected with the concrete beam body through an embedded part; the first wing plate comprises a plurality of prestressed pipes; the end face of the first wing plate is provided with a plurality of shear keys at intervals.
Preferably, the widening platform is composed of a bracket fixed on the embedded channel, a longitudinal channel steel arranged above the bracket and a steel plate arranged on the top surface of the longitudinal channel steel;
the steel plate is connected with the first wing plate concrete in sequence.
Preferably, the multifunctional rods are arranged on the vertical surface on the outer side of the first wing plate at intervals and used for placing electromechanical facilities; the multifunctional rod is connected with the vertical surface at the outer side of the first wing plate through the embedded part;
the arc PE pipe is embedded in the first wing plate and used for penetrating the signal communication cable from the cable bracket to the inner space of the multifunctional rod.
Preferably, the pier top segment is further included; the pier top section consists of a second bottom plate, a second web plate and a second wing plate; the both sides of second bottom plate are connected with the second web that inclines outward, and the second pterygoid lamina is located second web top surface and extends outward, and the upper and lower surface of second pterygoid lamina is the horizontal plane.
Preferably, the bottom surface of the second bottom plate is a horizontal plane, and the top surface of the second bottom plate is provided with a bidirectional or unidirectional transverse slope; the end face of the second bottom plate is provided with a plurality of rear Zhang Maoju;
the inner wall of the second web plate is provided with embedded channels at intervals, and the cable bracket is connected with the embedded channels through T-shaped bolts and is used for supporting the signal communication cable; the second web plate comprises a plurality of prestressed pipes; the end face of the second web is provided with a plurality of rear parts Zhang Maoju;
a widening platform of a steel structure is arranged at the junction of the second wing plate and the second web plate; the outer side of the upper surface of the second wing plate is provided with a guardrail, and the guardrail is connected with the concrete beam body through an embedded part; the multifunctional rods are arranged on the vertical surface on the outer side of the second wing plate at intervals and are used for placing electromechanical facilities; the multifunctional rod is connected with the vertical surface at the outer side of the second wing plate through the embedded part; an arc PE pipe is embedded in the second wing plate and used for penetrating the signal communication cable from the cable bracket to the inner space of the multifunctional rod; an arc PE pipe is embedded in the second wing plate and used for penetrating the signal communication cable from the cable bracket to the inner space of the multifunctional rod; the second wing plate comprises a plurality of prestressed pipes; the second wing plate end face is provided with a plurality of rear Zhang Maoju.
Preferably, the steel plate of the widening platform at the second wing is in concrete-sequential connection with the second wing.
Preferably, the pier top segment is connected with the pier through the support.
The invention also provides a storage and transportation method for constructing the efficient U-shaped section beam structure of the urban rail transit, which comprises the following steps: the pier top section and the midspan section are not provided with widening platforms, guardrails and multifunctional rods, a plurality of pier top sections/midspan sections are piled up through semi-rigid support pads, the self weight of the upper section of the pier top section/midspan section is transferred to the position above the first wing plate/the second wing plate of the lower section through the semi-rigid support pads, and after being transferred to the lowest layer, the pier top section/midspan section of the lowest layer is transferred to a concrete pedestal through the semi-rigid support pads; for each layer of segments, the support pads are positioned on the same vertical central line.
The segment transportation method specifically comprises the following steps: after the two truss sections are stacked, the truss sections are placed on a steel pedestal and anchored on a flat trailer through a fixed rope.
The invention at least comprises the following beneficial effects: the U-shaped segmental beam for urban rail transit, provided by the invention, is constructed efficiently, adopts the structural form of the camber web plate and the horizontal wing plate, has reasonable stress and comprehensive functions, can be stacked in multiple layers, and improves the storage and transportation efficiency. The problems of large occupied area of the prefabricated field of the U-shaped section beam, low transportation efficiency, aggravated urban road congestion, high construction and transportation cost of the prefabricated field and the like are solved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is three cases of a typical U-section beam section;
FIG. 2 is a typical floor plan of a U-section beam of the present invention;
FIG. 3 is a cross-sectional layout of a bridge span section of the present invention;
FIG. 4 is a sectional layout view of a bridge pier top segment of the present invention;
FIG. 5 is a front view of the multi-level storage of segments of the present invention;
FIG. 6 is a side elevational view of the multi-layered storage of segments of the present invention;
fig. 7 is a schematic representation of a multi-layer transport of segments of the present invention.
Reference numerals illustrate: the cable comprises a 1 midspan section, a 2 pier top section, a 3 support, a 4 bridge pier, a 5 pre-buried channel, a 6 guardrail, a 7 multifunctional rod, an 8 shear key, a 9 signal communication cable, a 10 power cable, an 11 pre-stress pipeline, a 12 track, a 13 post-cast track beam, a 14 cable support, a 15 widening platform, a 16 post Zhang Maoju, a 17 semi-rigid support pad, a 18 concrete pedestal, a 19 fixing rope and a 20 flat trailer.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be noted in particular that: the technical solutions and technical features provided in the sections including the following description in the present invention may be combined with each other without conflict.
In addition, the embodiments of the present invention referred to in the following description are typically only some, but not all, embodiments of the present invention. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
The invention is further described in detail below with reference to the drawings and the implementation, and the implementation process is as follows:
as shown in figures 2-4, the invention provides a U-shaped section beam for constructing efficient urban rail transit, which is divided into two types of sections, namely a midspan section 1 and a pier top section 2 according to beam types. A typical elevation of this structure is shown in figure 2. And prefabricating the midspan section 1 and the pier top section 2 in a prefabricating field by adopting a short line matching method, and hoisting and tensioning the prestressed steel bundles through a bridge girder erection machine after transporting to the field to form a whole span bridge superstructure.
The midspan section 1 is composed of a first bottom plate, a first web plate and a first wing plate; the both sides of first bottom plate are connected with the first web that inclines outward, and first pterygoid lamina is located first web top surface and extends outward, and the upper and lower surface of first pterygoid lamina is the horizontal plane. The first bottom plate is a member directly bearing the load of a single-line or double-line subway train, and the load is transferred to the first bottom plate of the U-shaped section beam through the rail 12 and the post-cast rail beam 13.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the bottom surface of the first bottom plate is a horizontal surface, and the top surface of the first bottom plate is provided with a bidirectional or unidirectional transverse slope, so that water is conveniently discharged; the first bottom plate is internally provided with a plurality of horizontally arranged prestressed pipes 11 which are used for penetrating the prestressed steel strands of the first bottom plate during installation; the shear key 8 is arranged in the middle of the end face of the first bottom plate, so that the first bottom plate positioning function is realized during assembly;
the embedded channels 5 are arranged on the inner wall of the first web at intervals, the cable brackets 14 are connected with the embedded channels 5 through T-shaped bolts and are used for supporting the signal communication cables 9, and the power cables 10 are arranged by utilizing the space of the first web and the first bottom plate chamfer; the first web plate comprises a plurality of prestressed pipes 11 which are used for penetrating the prestressed steel strands of the first web plate during installation; the first web end face is provided with a plurality of shear keys 8 at intervals, which is a main structure for transmitting shear force between the sections;
the upper surface of the first wing plate bears an evacuation channel, so that the light weight design of the section is realized, the gap space between the train limit space and the first wing plate is fully utilized, and a widening platform 15 with a steel structure is arranged at the junction of the first wing plate and the first web plate and used for widening the width of the upper surface of the first wing plate so as to ensure that the evacuation channel has enough width and facilitate pedestrians to get down onto the evacuation platform from the train; the guardrail 6 is arranged on the outer side of the upper surface of the first wing plate, and the guardrail 6 is connected with the concrete beam body through an embedded part to play a role in protecting pedestrians from falling; the first wing plate comprises a plurality of prestressed pipes 11 which are used for penetrating prestressed steel strands of the first wing plate during installation; the end surfaces of the first wing plates are provided with a plurality of shear keys 8 at intervals, so that the first wing plates are positioned.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the widening platform 15 is composed of a bracket fixed on the embedded channel 5, a longitudinal channel steel arranged above the bracket and a stainless steel pattern steel plate arranged on the top surface of the longitudinal channel steel;
the stainless steel pattern steel plate is in concrete sequential connection with the first wing plate, and preferably, the stainless steel pattern steel plate is adopted, so that the service life and the safety are prolonged due to the material and the surface bulge structure.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the multifunctional rods 7 are arranged on the vertical surface of the outer side of the first wing plate at intervals and are used for placing electromechanical facilities such as signal lamps, radio, WIFI, lightning rods and the like; the multifunctional rod 7 is connected with the vertical surface at the outer side of the first wing plate through an embedded part;
an arc PE pipe is embedded in the first wing plate and used for penetrating the signal communication cable 9 from the cable bracket 14 to the inner space of the multifunctional rod 7.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: also comprises a pier top segment 2; the pier top section 2 is composed of a second bottom plate, a second web plate and a second wing plate; the both sides of second bottom plate are connected with the second web that inclines outward, and the second pterygoid lamina is located second web top surface and extends outward, and the upper and lower surface of second pterygoid lamina is the horizontal plane.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the bottom surface of the second bottom plate is a horizontal surface, and the top surface of the second bottom plate is provided with a bidirectional or unidirectional transverse slope, so that water is conveniently discharged; the end face of the second bottom plate is provided with a plurality of rear Zhang Maoju;
the embedded channels 5 are arranged on the inner wall of the second web at intervals, the cable brackets 14 are connected with the embedded channels 5 through T-shaped bolts and are used for supporting the signal communication cables 9, and the power cables 10 are arranged by utilizing the space of the second web and the second bottom plate chamfer; the second web contains a plurality of prestressed pipes 11 which are used for penetrating the second web prestressed steel strands during installation; the end face of the second web plate is provided with a plurality of rear parts Zhang Maoju;
the upper surface of the second wing plate bears an evacuation channel, so that the light weight design of the section is realized, the gap space between the train limit space and the second wing plate is fully utilized, and a widening platform 15 with a steel structure is arranged at the junction of the second wing plate and the second web plate and used for widening the width of the upper surface of the second wing plate, so that the evacuation channel is ensured to have enough width, and pedestrians can conveniently get down onto the evacuation platform from the train; the guard rail 6 is arranged on the outer side of the upper surface of the second wing plate, and the guard rail 6 is connected with the concrete beam body through the embedded part, so that the effect of protecting pedestrians from falling is achieved; the multifunctional rods 7 are arranged on the vertical surface of the outer side of the second wing plate at intervals and are used for placing electromechanical facilities such as signal lamps, radio, WIFI, lightning rods and the like; the multifunctional rod 7 is connected with the vertical surface at the outer side of the second wing plate through an embedded part; an arc PE pipe is pre-buried in the second wing plate and is used for penetrating the signal communication cable 9 from the cable bracket 14 into the inner space of the multifunctional rod 7; an arc PE pipe is pre-buried in the second wing plate and is used for penetrating the signal communication cable 9 from the cable bracket 14 into the inner space of the multifunctional rod 7; the second wing plate comprises a plurality of prestressed pipes 11 which are used for penetrating prestressed steel strands of the second wing plate during installation; the end face of the second wing plate is provided with a plurality of rear parts Zhang Maoju and Zhang Maoju for anchoring the prestress steel strand.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the steel plate of the widening platform 15 at the second wing plate is connected with the concrete of the second wing plate in sequence, preferably stainless steel pattern steel plates are adopted, and the service life and the safety are prolonged due to the material and the surface bulge structure.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the pier top segment 2 is connected with the pier 4 through the support 3.
In another embodiment, as shown in fig. 5 to 6, a storage and transportation method for constructing an efficient urban rail 12 transportation U-shaped section beam structure, the storage method specifically comprises: the pier top section 2 and the midspan section 1 are not provided with the widening platform 15, the guardrails 6 and the multifunctional rods 7, a plurality of pier top sections 2/midspan sections 1 are piled up through the semi-rigid support pad 17, the self weight of the upper layer section of the pier top section 2/midspan sections 1 is transferred to the position above the first wing plate/the second wing plate of the lower layer section through the semi-rigid support pad 17, and after being transferred to the lowest layer, the pier top section 2/midspan sections 1 of the lowest layer are transferred to the concrete pedestal 18 through the semi-rigid support pad 17; for each layer of section, the support pads are positioned on the same vertical central line, vertical loads are directly transmitted to the foundation, and the stress difference of each layer of beam body is small. When the sections are piled up, the upper layer and the lower layer are overlapped in high space, so that the space is further compressed, and the overall stability of the multi-layer storage is improved. Due to the special design of the segment profile, up to 5 levels of segment storage can be achieved, with multiple levels of segment storage as shown in fig. 5.
As shown in fig. 7, the segment transportation method specifically includes: 2 truss sections can be transported simultaneously at a time. During transportation, two truss sections (the sections are pier top sections 2 or midspan sections 1) are stacked and then placed on a steel pedestal, and are anchored on a flat trailer 20 through a fixing rope 19; multi-layer transportation of segments is shown in fig. 6. Due to the superposition of the vertical spaces, the requirement of exceeding the net height during 2 layers of transportation under the urban road environment can be avoided. The single 2-truss transportation directly realizes doubling of the transportation efficiency, and reduces the current situation of urban road traffic jam to a certain extent.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the invention is suited, and further modifications may be readily made by one skilled in the art, and the invention is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.
Claims (9)
1. The U-shaped section beam structure for constructing the efficient urban rail transit is characterized by comprising midspan sections; the midspan section is composed of a first bottom plate, a first web plate and a first wing plate; the both sides of first bottom plate are connected with the first web that inclines outward, and first pterygoid lamina is located first web top surface and extends outward, and the upper and lower surface of first pterygoid lamina is the horizontal plane.
2. The construction efficient urban rail transit U-shaped section beam structure according to claim 1, wherein the bottom surface of the first bottom plate is a horizontal plane, and the top surface of the first bottom plate is provided with a bidirectional or unidirectional transverse slope; the first bottom plate is internally provided with a plurality of horizontally arranged prestressed pipes; a shear key is arranged in the middle of the end face of the first bottom plate;
the cable bracket is connected with the embedded channels through T-shaped bolts and is used for supporting the signal communication cable; the first web plate comprises a plurality of prestressed pipes; a plurality of shear keys are arranged on the end face of the first web at intervals;
a widening platform of a steel structure is arranged at the junction of the first wing plate and the first web plate; the outer side of the upper surface of the first wing plate is provided with a guardrail, and the guardrail is connected with the concrete beam body through an embedded part; the first wing plate comprises a plurality of prestressed pipes; the end face of the first wing plate is provided with a plurality of shear keys at intervals.
3. The construction-efficient urban rail transit U-shaped section beam structure according to claim 2, wherein the widening platform is composed of a bracket fixed on the embedded channel, a longitudinal channel steel arranged above the bracket, and a steel plate arranged on the top surface of the longitudinal channel steel;
the steel plate is connected with the first wing plate concrete in sequence.
4. The construction efficient urban rail transit U-section beam structure of claim 2, wherein the multifunctional bars are arranged at intervals on the outer vertical surfaces of the first wing plates for placing electromechanical facilities; the multifunctional rod is connected with the vertical surface at the outer side of the first wing plate through the embedded part;
the arc PE pipe is embedded in the first wing plate and used for penetrating the signal communication cable from the cable bracket to the inner space of the multifunctional rod.
5. The construction-efficient urban rail transit U-section beam structure of any one of claims 1-4, further comprising a pier top section; the pier top section consists of a second bottom plate, a second web plate and a second wing plate; the both sides of second bottom plate are connected with the second web that inclines outward, and the second pterygoid lamina is located second web top surface and extends outward, and the upper and lower surface of second pterygoid lamina is the horizontal plane.
6. The construction efficient urban rail transit U-shaped section beam structure according to claim 5, wherein the bottom surface of the second bottom plate is a horizontal plane, and the top surface of the second bottom plate is provided with a bidirectional or unidirectional transverse slope; the end face of the second bottom plate is provided with a plurality of rear Zhang Maoju;
the inner wall of the second web plate is provided with embedded channels at intervals, and the cable bracket is connected with the embedded channels through T-shaped bolts and is used for supporting the signal communication cable; the second web plate comprises a plurality of prestressed pipes; the end face of the second web is provided with a plurality of rear parts Zhang Maoju;
a widening platform of a steel structure is arranged at the junction of the second wing plate and the second web plate; the outer side of the upper surface of the second wing plate is provided with a guardrail, and the guardrail is connected with the concrete beam body through an embedded part; the multifunctional rods are arranged on the vertical surface on the outer side of the second wing plate at intervals and are used for placing electromechanical facilities; the multifunctional rod is connected with the vertical surface at the outer side of the second wing plate through the embedded part; an arc PE pipe is embedded in the second wing plate and used for penetrating the signal communication cable from the cable bracket to the inner space of the multifunctional rod; an arc PE pipe is embedded in the second wing plate and used for penetrating the signal communication cable from the cable bracket to the inner space of the multifunctional rod; the second wing plate comprises a plurality of prestressed pipes; the second wing plate end face is provided with a plurality of rear Zhang Maoju.
7. The construction efficient urban rail transit U-section beam structure of claim 6, wherein the steel plate of the widening platform at the second wing is in concrete-compliant engagement with the second wing.
8. The construction efficient urban rail transit U-section beam structure of claim 7, wherein the pier top sections are connected to the piers by abutments.
9. A method for storing and transporting a U-shaped section beam structure for constructing an efficient urban rail transit according to any one of claims 5 to 7, characterized in that,
the storage method specifically comprises the following steps: the pier top section and the midspan section are not provided with widening platforms, guardrails and multifunctional rods, a plurality of pier top sections/midspan sections are piled up through semi-rigid support pads, the self weight of the upper section of the pier top section/midspan section is transferred to the position above the first wing plate/the second wing plate of the lower section through the semi-rigid support pads, and after being transferred to the lowest layer, the pier top section/midspan section of the lowest layer is transferred to a concrete pedestal through the semi-rigid support pads; for each layer of section, the support pads are positioned on the same vertical central line;
the transportation method comprises the following steps: after the two truss sections are stacked, the truss sections are placed on a steel pedestal and anchored on a flat trailer through a fixed rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311729211.4A CN117468329A (en) | 2023-12-15 | 2023-12-15 | Construction efficient U-shaped segmental beam structure for urban rail transit and storage and transportation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311729211.4A CN117468329A (en) | 2023-12-15 | 2023-12-15 | Construction efficient U-shaped segmental beam structure for urban rail transit and storage and transportation method |
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