CN216765890U

CN216765890U - Steel corrugated pipe culvert bottom supporting stiffening and pressing concrete layer structure

Info

Publication number: CN216765890U
Application number: CN202123185857.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Yuewei Technology Co ltd
Current assignee: Hangzhou Yuewei Technology Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-06-17
Anticipated expiration: 2031-12-17

Abstract

The utility model relates to a structure for supporting, stiffening and pressing a concrete layer at the bottom of a steel corrugated pipe culvert, which consists of a corrugated steel plate, stiffening plates, supporting plates and a concrete layer; the corrugated steel plates are mutually spliced to form a corrugated steel pipe culvert, the upper half part of the corrugated steel pipe culvert is semicircular, and the lower half part of the corrugated steel pipe culvert is arc-shaped; the stiffening plate and the corrugated steel culvert on the lower half part are connected by bolts and nuts; the backup pad laminating arrange in the stiffener lower surface, the higher side edge of backup pad is equipped with a recess, square pipe laminating is placed in the recess, the backup pad bottom is connected with the backing plate is perpendicular, backup pad both sides surface evenly is equipped with the peg along vertical direction. Adopt concreting in advance, wait that the corrugated steel plate of concrete initial set before sinking the latter half has avoided the production of the interior bubble of construction of vibrating and concrete in the narrow space of pipe culvert bottom, be equipped with bearing structure at the bottom of the corrugated steel plate, strengthened the structural strength and the stability of long-span pipe culvert.

Description

Structure for supporting, stiffening and pressing concrete layer at bottom of steel corrugated pipe culvert

Technical Field

The utility model relates to a large-span steel corrugated pipe culvert, in particular to a structure for supporting and stiffening the bottom of the steel corrugated pipe culvert and pressing a concrete layer.

Background

The steel corrugated pipe culvert is a pipe culvert which is formed by splicing a plurality of corrugated steel plates by bolts, the rigidity of the section of the steel plate can be improved by the existence of the corrugated shape, the structure has stronger bearing capacity and structural stability, and therefore the steel corrugated pipe culvert is more widely used in projects such as a road culvert, most of the steel corrugated pipe culverts related to the current projects are small in span, less is related to the large-span steel corrugated pipe culvert above 15m, and because the upper portion soil covering is arranged, along with the increase of the span, the load and the internal force of the structure are greatly increased, especially, the stress of the pipe waist position is maximum, and the pipe culvert can not meet the design and use requirements only by the corrugated steel pipe culvert. In addition, in traditional steel corrugated pipe culvert work progress, install the ripple steel sheet earlier mostly, pour the concrete again, this method is difficult to carry out the construction of vibrating in the pipe waist department especially the narrow space of steel corrugated pipe culvert bottom, the inside bubble of concrete can't in time discharge, cause concrete and steel corrugated pipe culvert bottom to combine defect such as inseparable easily, simultaneously because the concrete shaping quality is not high, can not bear the load that comes from the ripple steel sheet structure well, cause serious quality hidden danger for follow-up construction, if follow-up construction needs carry out maintenance to the concrete of quality defect, not only influence construction period, also waste a large amount of manpowers, material resources, and the concrete intensity can not be fine satisfies the designing requirement after handling.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a structure for supporting and stiffening the bottom of a steel corrugated pipe culvert and pressing a concrete layer against the problems in the construction of the conventional steel corrugated pipe culvert, and adopts the following technical scheme.

The bottom of the steel corrugated pipe culvert is supported, stiffened and pressed and attached to a concrete layer structure and is characterized by consisting of a corrugated steel plate, a stiffening plate, a supporting plate and a concrete layer; the corrugated steel plates are mutually spliced to form a steel corrugated pipe culvert, the upper half part of the steel corrugated pipe culvert is semicircular, the lower half part of the steel corrugated pipe culvert is arc-shaped, backfill soil and geogrids are arranged on the top and the side surfaces of the steel corrugated pipe culvert, and reinforcing steel bars are arranged on the surface of the lower half part of the inner side of the steel corrugated pipe culvert; the stiffening plate is connected with the steel corrugated pipe culvert on the lower half part by adopting bolts and nuts, the stiffening plate is tightly attached to a concrete layer, and the concrete layer is positioned between the retaining walls on the two sides of the cushion layer; the backup pad laminating arrange in stiffening plate lower surface, the higher side edge of backup pad is equipped with a recess, square pipe laminating is placed in the recess, the backup pad bottom is connected with the backing plate is perpendicular, backup pad both sides surface evenly is equipped with the peg along vertical direction, the hole is evenly bored on the backing plate surface, the backing plate is located bed course upper surface department.

Preferably, the corrugated shape of the stiffening plate is the same as that of the steel corrugated pipe culvert, and the stiffening plate is arranged at the bottom side of the lower half part of the steel corrugated pipe culvert.

Preferably, the shape of the support plate is determined by the shape of a stiffening plate of a part, required to be reinforced and supported, of the bottom of the steel corrugated pipe culvert, and the size of a groove formed in the upper side edge of the support plate is the same as the size of the cross section of the square pipe.

Preferably, the backfill soil is paved with a layer of geogrid every 50cm of thickness.

Preferably, the height of the concrete layer at the bottom of the steel corrugated pipe culvert is the same as the height of the retaining walls at the two sides.

Preferably, square pipe lead to long arranging, length is the same with steel corrugated pipe culvert longitudinal length, the backup pad evenly sets up in square below.

Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

1. the utility model adopts the pre-pouring concrete, the lower half portion of the corrugated steel plate is sunk before the concrete is initially set, and the inflatable water bag is arranged on the surface of the corrugated steel plate, thereby avoiding the vibration construction in the narrow space at the bottom of the steel corrugated pipe culvert, having simple and efficient construction, utilizing the dead weight of the corrugated steel plate and the load of the water bag to carry out pre-pressing, effectively ensuring the close combination of the concrete and the corrugated steel plate and avoiding the generation of bubbles, and simultaneously preventing the stress concentration because the concrete is completely attached to the bottom arc of the steel corrugated pipe culvert.

2. The bottom of the corrugated steel plate is additionally provided with multiple reinforcing structures such as stiffening plates, supporting plates and square tubes, the reinforcing structures can be longitudinally and transversely shared and bear loads from the steel corrugated pipe culvert in subsequent use, the problem of huge stress concentration at the pipe waist is effectively solved, the structural strength and stability of the steel corrugated pipe culvert with the large span are greatly enhanced, the bearing performance of the structure is improved, and the loads from the soil covering and the loads borne by the structure in subsequent use can be effectively borne.

3. The support plate surface is along the even peg that sets up of vertical direction, can combine closely with the concrete after corrugated steel plate sinks, has strengthened the joint strength of backup pad with the concrete greatly, improves the whole atress performance of backup pad, and the backup pad combines wholly with the concrete, guarantees the full play of two material performance effectively.

4. The hole that the backing plate surface was bored and is established, the concrete can pass backing plate and bed course contact when pouring, and backing plate, bed course, concrete combine as whole after waiting to be under construction to accomplish, have guaranteed inseparabler connection between backing plate and the bed course, the production of bubble when also can reducing concrete placement simultaneously.

5. The higher side tip of backup pad is equipped with the recess, and square pipe can be accurately placed fast, can play the effect of location and calibration for follow-up deck plate sinks after backup pad and the construction of square pipe are accomplished, has further improved the accuracy of construction, has reduced the construction degree of difficulty simultaneously, has improved the efficiency of construction by a wide margin.

Drawings

FIG. 1 is a schematic illustration of a slope excavation;

FIG. 2 is a schematic view of the installation of the support plate and the casting of concrete;

FIG. 3 is a schematic view of a sunken deck plate;

FIG. 4 is a front view of the deck plate bottom support structure (pegs not shown);

FIG. 5 is a detailed view of the connection of the corrugated steel plate and the stiffening plate;

FIG. 6 is a side view of the support plate;

FIG. 7 is a side view of the support structure as installed (pegs not shown);

FIG. 8 is a finished elevation view of the bottom deck (pegs not shown);

FIG. 9 is a schematic view showing the completion of the splicing of corrugated steel plates;

FIG. 10 is a schematic illustration of a tube side fill;

FIG. 11 is a schematic view of a pipe top fill;

FIG. 12 is a schematic view showing the completion of the inside of the pipe.

The figure is marked with: 1-original soil layer, 2-bedding layer, 3-retaining wall, 4-excavated slope surface, 5-backfill soil, 6-ground line, 7-corrugated steel plate, 8-stiffening plate, 81-bolt, 82-nut, 9-support plate, 91-bolt, 92-backing plate, 921-hole, 93-groove, 10-reinforcing steel bar, 11-concrete layer, 12-driving surface, 13-sidewalk, 14-geogrid, 15-inflatable water bag and 16-square tube.

Detailed Description

In order to further understand the present invention, the following embodiments will be described in detail with reference to fig. 1 to 12, and the following embodiments are implemented on the premise of the technical solution of the present invention, and the detailed embodiments are given, but the scope of the present invention is not limited to the following embodiments.

In the embodiment, the longitudinal length of the steel corrugated pipe culvert is 60m, the steel corrugated pipe culvert is divided into three sections equally and is constructed respectively, the longitudinal length of each section is 20m, retaining walls are respectively erected on two sides after the slope surface is excavated, and backfill is adopted between the slope surface and the retaining walls; mounting a support plate and a square tube, pouring a concrete layer, then sinking the lower half part of the corrugated steel plate with the stiffening plate, and prepressing by adopting an inflatable water bag; splicing the corrugated steel plate of the upper half part, filling soil on the pipe side and the pipe back, and laying a layer of geogrid when the thickness of the filled soil is 50cm until the filling height is flush with the ground line; and finally, welding reinforcing steel bars on the corrugated steel plate at the lower half part in the steel corrugated pipe culvert, and pouring concrete.

Referring to the attached drawings 1, 2 and 3, backfill soil 5 is filled between the retaining walls 3 on the two sides and the excavated slope 4, a concrete layer 11 is poured between the retaining walls 3 on the two sides on the cushion layer 2, and the heights of the two sides of the concrete layer 11 are the same as those of the retaining walls 3 on the two sides.

Referring to the attached drawing 3, the bottom of the steel corrugated pipe culvert is supported, stiffened and pressed and attached to a concrete layer structure, and the steel corrugated pipe culvert consists of a corrugated steel plate 7, a stiffening plate 8 and a supporting plate 9, wherein the stiffening plate 8 is attached to 11 layers of concrete.

Referring to fig. 5 and 6, the stiffening plate 8 and the corrugated steel plate 7 of the lower half are connected by bolts 81 and nuts 82, the top of the support plate 9 is connected with the stiffening plate 8, the bottom of the support plate is vertically connected with the backing plate 92, studs 91 are uniformly arranged on the surfaces of the two sides of the support plate 9 along the vertical direction, holes 921 are uniformly drilled on the surface of the backing plate 92, and the backing plate 92 is located on the upper surface of the cushion layer 2.

Referring to fig. 5, the stiffening plate 8 has the same corrugation shape as the corrugated steel plate 7, and the stiffening plate 8 is disposed at the bottom of the lower half of the corrugated steel plate 7.

Referring to fig. 4 and 6, the shape of the support plate 9 is determined by the shape of the stiffening plate 8 of the support part to be reinforced at the bottom of the steel corrugated pipe culvert, and the size of the groove 93 formed in the upper side edge of the support plate 9 is the same as the size of the cross section of the square pipe 16.

With reference to fig. 6 and 7, the square pipe 16 is arranged in a full length, the length of the square pipe is the same as the longitudinal length of the steel corrugated pipe culvert, and the support plates 9 are uniformly arranged below the square pipe 16.

Referring to fig. 11, the backfill soil 5 is laid with a layer of geogrid 14 every 50cm thick.

Referring to fig. 12, after the welding construction of the steel bars 12 of the corrugated steel plates 7 on the lower half portions of the corrugated steel pipe culvert is completed, the concrete pouring construction of the traffic surface 12 is performed, and then the pouring construction of the sidewalks 13 on the two sides is performed.

The above-mentioned embodiments are only used for explaining the technical idea of the present invention, and not for limiting the protection of the claims of the present invention, and the insubstantial modifications of the present invention using this idea shall fall within the protection scope of the present invention.

Claims

1. The steel corrugated pipe culvert bottom supporting stiffening and pressing concrete layer structure is characterized by comprising corrugated steel plates (7), stiffening plates (8), supporting plates (9) and a concrete layer (11); the corrugated steel plates (7) are mutually spliced to form a steel corrugated pipe culvert, the upper half part of the steel corrugated pipe culvert is semicircular, the lower half part of the steel corrugated pipe culvert is arc-shaped, backfill soil (5) and geogrids (14) are arranged on the top and the side surfaces of the steel corrugated pipe culvert, and reinforcing steel bars (10) are arranged on the surface of the lower half part of the inner side of the steel corrugated pipe culvert; the stiffening plate (8) and the steel corrugated pipe culvert on the lower half are connected by bolts (81) and nuts (82), the stiffening plate (8) is tightly attached to the concrete layer (11), and the concrete layer (11) is positioned between retaining walls (3) on two sides of the cushion layer (2); backup pad (9) laminating arrange in stiffener (8) lower surface, the higher side edge of backup pad (9) is equipped with a recess (93), square pipe (16) laminating is placed in recess (93), backup pad (9) bottom is connected with backing plate (92) is perpendicular, backup pad (9) both sides surface evenly is equipped with peg (91) along vertical direction, backing plate (92) surface evenly bores and establishes hole (921), backing plate (92) are located bed course (2) upper surface department.

2. The bottom supporting and stiffening concrete-laminated structure of the steel corrugated pipe culvert according to claim 1, wherein the corrugated shape of the stiffening plates (8) is the same as that of the steel corrugated pipe culvert, and the stiffening plates (8) are arranged on the bottom side of the lower half part of the steel corrugated pipe culvert.

3. The bottom-supported stiffened and concrete-layer-laminated structure of a steel corrugated pipe culvert according to claim 1, wherein the shape of the supporting plate (9) is determined by the shape of a stiffening plate (8) of a part of the steel corrugated pipe culvert to be reinforced and supported, and the size of a groove (93) formed in the upper side edge of the supporting plate (9) is the same as the size of the cross section of the square pipe (16).

4. The steel corrugated culvert bottom support stiffened concrete layer structure of claim 1 wherein said backfill (5) is laid with a layer of geogrid (14) every 50cm thick.

5. The steel corrugated pipe culvert bottom supporting stiffened and pressed concrete layer structure as claimed in claim 1, wherein the height of the two sides of the concrete layer (11) at the bottom of the steel corrugated pipe culvert is the same as the height of the retaining walls (3) at the two sides.

6. The bottom supporting and stiffening concrete layer pressing structure of the steel corrugated pipe culvert according to claim 1, wherein the square pipes (16) are arranged in a full length, the length of the steel corrugated pipe culvert is the same as the longitudinal length of the steel corrugated pipe culvert, and the supporting plates (9) are uniformly arranged below the square pipes (16).