CN215486065U - End block structure that roof longeron was pour - Google Patents
End block structure that roof longeron was pour Download PDFInfo
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- CN215486065U CN215486065U CN202121826158.6U CN202121826158U CN215486065U CN 215486065 U CN215486065 U CN 215486065U CN 202121826158 U CN202121826158 U CN 202121826158U CN 215486065 U CN215486065 U CN 215486065U
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Abstract
The utility model provides an end plugging structure for pouring a top longitudinal beam, which belongs to the technical field of construction of underground excavation stations of subways and comprises the following steps: the plugging net is attached to the plugging steel bar net and used for plugging concrete, the middle longitudinal steel bar layer serves as a boundary to divide the plugging steel bar grid structure into a first steel grid structure and a second steel grid structure, a concrete pouring observation window is arranged on the middle upper portion of the first steel grid structure, the rear portion of the second steel grid structure serves as a pouring steel grid area, and the first steel grid structure is arranged above the pouring steel grid area. This end block structure that top longeron was pour sets up fixed shutoff steel grating structure with the tip of the top longeron that needs pour, exempts from to dismantle, and the structure is firm, uses manpower sparingly, and the construction of being convenient for can carry out the top longeron of segmentation in succession and pour, has improved the efficiency of construction.
Description
Technical Field
The utility model relates to the technical field of construction of underground excavated stations of subways, in particular to an end plugging structure for concrete pouring of a top longitudinal beam.
Background
The hole-pile method is a kind of shallow buried underground excavation method, when in construction, firstly excavating a pilot tunnel, then constructing side piles, a central column, a crown beam and a top longitudinal beam in the pilot tunnel, then excavating and constructing buckling arches, and finally excavating soil body layer by layer downwards in a supporting system formed by pile beam arches and constructing an internal structure. The hole-pile method combines the advantages of the cover excavation method and the underground excavation method, can effectively control the ground surface settlement, and is an important construction method for building subway stations. The top longitudinal beam is the bearing longitudinal beam at the top of the station, the top longitudinal beam is cast in sections when being constructed for concrete casting, the existing concrete casting is assembled by adopting a plurality of wooden plates and fixed by using a steel bar framework, the end template is cast after the end template is formed by combination, the end template is disassembled after the concrete strength meets the requirement, the construction of the next procedure can be carried out after the end template is disassembled, the construction progress is slow, the template is troublesome to install and disassemble, and the method is quite inapplicable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an end plugging structure for top longitudinal beam pouring, which is characterized in that a plugging structure which can not be disassembled is fixedly arranged at the end of a top longitudinal beam poured in a subsection mode, the structure is stable, construction of the next construction section is not influenced, and the existing problems are solved.
The embodiment of the utility model is realized by the following technical scheme:
an end block structure that top longeron was pour, includes: the plugging steel grid structure comprises a vertical mesh distribution reinforcing steel bar layer and a fixed reinforcing steel bar layer, after the plugging net is attached to the cloth net reinforcing steel bar layer, the plugging steel grid structure is divided into a first steel grid structure and a second steel grid structure, the first steel grid structure is arranged above the middle longitudinal reinforcing steel bar layer, the second steel grid structure is arranged below the middle longitudinal reinforcing steel bar layer, the middle upper part of the first steel grating structure is provided with a concrete pouring observation window, the longitudinal direction of the top longitudinal beam is arranged in the front and back direction, a casting steel grating area is arranged behind the second steel grating structure, the first steel grating structure is arranged above the end part of the casting steel grating area, the first steel grid structure is provided with an extension part which extends downwards, penetrates into the pouring steel grid area and is welded and fixed with the middle longitudinal steel bar layer.
Furthermore, a steel plate water stop is arranged between the top of the second steel grating structure and the middle longitudinal steel bar layer, and supporting plates and other steel bar supports are arranged on two sides of the steel plate water stop and used for supporting the steel plate water stop to enable the steel plate water stop to be kept horizontal.
Furthermore, the reinforcing steel bars in the cloth mesh reinforcing steel bar layer are bent downwards at the top end part to form a bent top end part.
Furthermore, the fixed reinforcing steel layer comprises a plurality of vertical reinforcing steel bars and a plurality of transverse reinforcing steel bars which are mutually welded and fixed.
Furthermore, a plurality of fixed bent steel bars are arranged on a fixed steel bar layer of the second steel grid structure, one end of each fixed bent steel bar is sleeved on and welded to the steel bar of the fixed steel bar layer, and the other end of each fixed bent steel bar is welded in a pouring steel grid area behind the second steel grid structure.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:
this end block structure that top longeron was pour sets up fixed shutoff steel grating structure with the tip of the top longeron that needs pour, exempts from to dismantle, uses manpower sparingly, can carry out the top longeron of segmentation in succession and pour, has improved the efficiency of construction. The plugging steel grating structure is divided into two steel grating structures with different upper and lower fixed positions, so that the whole plugging structure is solid and stable, and pouring and passing are facilitated.
Drawings
Fig. 1 is a schematic longitudinal front view of the present invention.
FIG. 2 is a schematic side view of the present invention.
Icon: 1-middle longitudinal steel bar layer, 2-plugging steel grid structure, 3-plugging net, 4-pouring opening, 5-pouring steel grid area, 6-steel plate water stop belt, 7-support plate, 8-bending top end part, 9-fixed bent steel bar, 21-first steel grid structure, 22-second steel grid structure, 211-extension part, 201-net-laying steel bar layer and 202-fixed steel bar layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Referring to fig. 1 and 2, a head plugging structure poured by a top longitudinal beam further includes: the end face profile structure of the top longitudinal beam is shown as the profile of the plugging steel grid structure 2, the middle part is penetrated with the middle longitudinal steel bar layer 1, the middle longitudinal steel bar layer 1 is longitudinally arranged and penetrated steel bars, the area below the middle longitudinal steel bar layer 1 is a pouring steel grid area 5 which is the main part of the top longitudinal beam to be poured and is fully distributed with fixed steel bars, the end part of the top longitudinal beam is plugged by the plugging structure, and the bottom surface and the side surface still adopt templates. The area above the middle longitudinal reinforcing steel bar layer 1 is a backfill part which needs to be poured subsequently.
For a stable fixation, the plugging steel grid structure 2 is divided into a first steel grid structure 21 and a second steel grid structure 22, the first steel grid structure 21 being above the middle longitudinal tendon layer 1, and the second steel grid structure 22 being below the middle longitudinal tendon layer 1. The first steel grid structure 21 and the second steel grid structure 22 have the same plugging structure but the fixing positions of the roots of the first steel grid structure and the second steel grid structure are different, the plugging steel grid structure 2 comprises a vertical cloth mesh reinforcing steel bar layer 201 and a fixed reinforcing steel bar layer 202, the fixed reinforcing steel bar layer 202 is a structure mainly playing a fixing role and comprises a plurality of vertical reinforcing steel bars and a plurality of transverse reinforcing steel bars which are mutually welded and fixed, the cloth mesh reinforcing steel bar layer 201 is welded behind the fixed reinforcing steel bar layer 202, the plugging net 3 is a net for preventing concrete from overflowing, and after the plugging net 3 is attached to the cloth mesh reinforcing steel bar layer 201, the plugging net 3 is fixed on the cloth mesh reinforcing steel bar layer 201 in a winding mode through steel wires. In order to enable the plugging steel grid structure 2 to form a stable fixed structure, specifically referring to fig. 2, the second steel grid structure 22 is disposed on the end surface of the casting steel grid area 5, the first steel grid structure 21 is disposed above the end of the casting steel grid area 5, that is, above the rear side of the second steel grid structure 22, and the reason for this is that the first steel grid structure 21 can extend downward, the extension portion 211 penetrates into the casting steel grid area 5 and is welded and fixed with the middle longitudinal reinforcement layer 1, and the second steel grid structure 22 can penetrate downward into the stable beam pier fixing structure below, so that the upper and lower steel grid structures can be stably fixed, if the upper and lower steel grid structures are not separated into the upper and lower steel grid regions but are disposed into the same piece, the lower portion is extruded during casting, so that the whole plugging steel grid structure 2 deflects, and the structure is unstable. The middle upper portion of the first steel grating structure 21 is provided with a concrete pouring observation window 4 for concrete pouring by a person.
A steel plate water stop belt 6 is arranged between the top of the second steel grating structure 22 and the longitudinal reinforcing steel bar layer 1 in the middle, supporting plates 7 are arranged on two sides of the steel plate water stop belt 6, other reinforcing steel bars are arranged above and below the steel plate water stop belt 6 to be welded and fixed, and the steel plate water stop belt 6 is supported from the periphery to keep the steel plate water stop belt 6 horizontal.
After the cloth mesh reinforcing steel bar layer 201 is attached to the cloth mesh reinforcing steel bar layer 201, the reinforcing steel bars in the cloth mesh reinforcing steel bar layer 201 are bent downwards at the top end part to form a bent top end part 8, so that the sharp pointed end parts of the reinforcing steel bars can be prevented from damaging the plugging net 3 to cause leakage.
The terminal surface of top longeron can receive the extrusion when pouring, in order to make second steel grating structure 22 more stable, be provided with a plurality of fixed curved bar reinforcing bars 9 on the fixed reinforcing bar layer 202 of second steel grating structure 22, fixed curved bar reinforcing bar 9 is the U type, fixed curved bar reinforcing bar 9U-shaped notch pot head is on and welds the reinforcing bar of fixed reinforcing bar layer 202, the other end is exactly that two feet of U-shaped alternate and weld in the steel grating district 5 of pouring at second steel grating structure 22 rear, make second steel grating structure 22 more stable.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention, which is defined by the appended claims and their equivalents.
Claims (5)
1. The utility model provides an end block structure that top longeron was pour, its characterized in that includes: the steel bar grating comprises a plugging net (3), a plugging steel grating structure (2) and a middle longitudinal steel bar layer (1), wherein the plugging steel grating structure (2) comprises a vertical mesh distribution steel bar layer (201) and a fixed steel bar layer (202), the plugging net (3) is attached to the back of the mesh distribution steel bar layer (201), the plugging steel grating structure (2) is divided into a first steel grating structure (21) and a second steel grating structure (22), the first steel grating structure (21) is arranged above the middle longitudinal steel bar layer (1), the second steel grating structure (22) is arranged below the middle longitudinal steel bar layer (1), a concrete pouring observation window (4) is arranged at the middle upper part of the first steel grating structure (21), the longitudinal direction of a top longitudinal beam is arranged at the front and rear part, the rear part of the second steel grating structure (22) is a pouring steel grating area (5), and the first steel grating structure (21) is arranged above the end part of the pouring steel grating area (5), the first steel grid structure (21) is provided with an extension part (211) extending downwards, the extension part is inserted into the pouring steel grid area (5) and is welded and fixed with the middle longitudinal reinforcing steel bar layer (1).
2. The end plugging structure poured by the top longitudinal beam as claimed in claim 1, wherein a steel plate water stop (6) is arranged between the top and the middle longitudinal reinforcing steel layer (1) of the second steel grating structure (22), and support plates (7) are arranged on two sides of the steel plate water stop (6) for supporting the steel plate water stop (6) to keep the steel plate water stop (6) horizontal.
3. A top stringer cast end block structure according to claim 1 wherein the steel reinforcement in the mesh reinforcement layer (201) is bent downwards at the top end to form a bent top end (8).
4. The end block structure poured by a top longitudinal beam as claimed in claim 1, wherein the fixed reinforcing steel layer (202) comprises a plurality of vertical reinforcing steel bars and a plurality of transverse reinforcing steel bars which are welded and fixed with each other.
5. The end plugging structure cast by a top longitudinal beam as claimed in claim 1, wherein a plurality of fixed angle steel bars (9) are arranged on the fixed steel bar layer (202) of the second steel grid structure (22), one end of each fixed angle steel bar (9) is sleeved and welded on the steel bar of the fixed steel bar layer (202), and the other end is welded in the cast steel grid area (5) behind the second steel grid structure (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121826158.6U CN215486065U (en) | 2021-08-05 | 2021-08-05 | End block structure that roof longeron was pour |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121826158.6U CN215486065U (en) | 2021-08-05 | 2021-08-05 | End block structure that roof longeron was pour |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215486065U true CN215486065U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121826158.6U Active CN215486065U (en) | 2021-08-05 | 2021-08-05 | End block structure that roof longeron was pour |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215486065U (en) |
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2021
- 2021-08-05 CN CN202121826158.6U patent/CN215486065U/en active Active
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