Bridge butt strap facilitating filling of falling area
By setting up an L-shaped bridge approach slab structure with filling holes and rubber plugs under the bridge approach slab, and using foam-expanded concrete to fill the gaps, the problems of approach slab breakage and "bridge approach slab settlement" were solved, achieving a fast and undisturbed repair effect.
Patent Information
- Application Number
- CN202520439816.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-13
AI Technical Summary
The settlement difference between the bridge and the soil subgrade causes a void area under the approach slab, which in turn leads to the breakage of the approach slab and the phenomenon of "bridge approach jump". Existing repair methods are time-consuming, labor-intensive and affect road traffic.
Design an L-shaped bridge approach slab with filling through holes and removable rubber plugs at the bottom. Foamed expanding concrete is injected through the filling through holes to fill the voids, and the expansion effect supports the approach slab and prevents it from breaking.
It enables the rapid filling of empty areas without affecting road traffic, avoids slab breakage, saves manpower and resources, prevents "bridge approach bouncing" phenomenon, and does not damage the road surface.
Smart Images
Figure CN223723585U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a bridge deck slab, more specifically, relates to a bridge deck slab convenient to fill empty area. BACKGROUND
[0002] With the great construction and the day by day improvement of the traffic network of our country, the conditions of encountering river bridge and encountering mountain tunnel gradually increase, in order to realize the connection of bridge and soil subgrade, bridge deck slab needs to be used. In the service process of bridge road, under the difference of settlement of bridge and soil subgrade, empty area appears under the deck slab, and forms "empty area" under the deck slab, the appearance of empty area will cause the part of deck slab close to abutment to lose support, under the action of continuous vehicle load, further will cause the deck slab to break, and the road surface at the broken part of deck slab will appear pit, when the vehicle passes through the pit, will appear big bump, this is the commonly said "bridgehead bump" phenomenon.
[0003] At present, the mode of solving "bridgehead bump" problem is: first, excavating the bridgehead road surface, then backfilling the empty area, then laying new deck slab, finally laying the road base and surface layer of excavation part, the whole repair process is time-consuming and laborious, and will also affect the normal traffic of road. Therefore, the utility model provides a bridge deck slab convenient to fill empty area, when empty area appears under the deck slab, can backfill it under the condition of not affecting the normal traffic of vehicle. SUMMARY
[0004] The utility model discloses in order to overcome the shortcoming of above-mentioned technical problem, provide a kind of bridge deck slab convenient to fill empty area.
[0005] The utility model discloses a bridge deck slab convenient to fill empty area, including the two L-shaped deck slabs of being set on bridge and roadbed, bridge is by pile foundation, abutment and beam body constitute, pile foundation is in-depth foundation, abutment is fixed on abutment, the upper portion of abutment is back wall, the outside of abutment is provided with corbel, the end of beam body is fixed on abutment;Its characterized in that: the cross section of L-shaped deck slab is L-shaped, L-shaped deck slab is by flat plate portion and vertical plate portion constitute, the end of flat plate portion is set on corbel, vertical plate portion is located on the outside of corbel, vertical plate portion is set with filling through-hole, and filling through-hole is provided with the detachable rubber plug of its sealing.
[0006] The utility model discloses a bridge deck slab convenient to fill empty area, the longitudinal seam is set between the two L-shaped deck slabs, and hot pitch is filled in longitudinal seam.
[0007] The utility model discloses a bridge deck slab convenient to fill empty area, the outer surface of rubber plug is fixed with lug, and round hole is formed in lug.
[0008] The utility model discloses a bridge deck plate convenient to fill empty area, the lower portion of L deck plate is provided with a pillow beam, and the pillow beam supports the outer end of the L deck plate.
[0009] The utility model discloses a bridge deck plate convenient to fill empty area, the end of beam body and back wall are provided with expansion joint.
[0010] The utility model discloses a bridge deck plate convenient to fill empty area, the lower portion of L deck plate is provided with a pillow beam, and the pillow beam supports the outer end of the L deck plate.
[0011] The utility model discloses a bridge deck plate convenient to fill empty area, the lower portion of L deck plate is provided with a pillow beam, and the pillow beam supports the outer end of the L deck plate.
[0012] The utility model discloses a bridge deck plate convenient to fill empty area, the lower portion of L deck plate is provided with a pillow beam, and the pillow beam supports the outer end of the L deck plate. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is the front view of bridge deck plate convenient to fill empty area of the utility model;
[0014] Figure 2 It is the plan view of bridge deck plate convenient to fill empty area of the utility model;
[0015] Figure 3 It is Figure 1 The section view of A-A section in middle;
[0016] Figure 4 It is the structure schematic diagram of empty area being filled in the utility model.
[0017] In the drawing: 1 pile foundation, 2 abutment, 3 back wall, 4 corbel, 5 cushion layer, 6 L deck plate, 7 base layer, 8 surface layer, 9 flat plate part, 10 vertical plate part, 11 fill hole, 12 rubber plug, 13 ear plate, 14 longitudinal joint, 15 beam body, 16 expansion joint, 17 empty area, 18 pillow beam, 19 foam expansion concrete. DETAILED DESCRIPTION
[0018] The utility model is further described below in combination with the drawings and examples.
[0019] As shown in Figure 1 and Figure 2 , the utility model discloses a bridge deck of filling empty area conveniently gives the front view and the plan view of bridge deck of filling empty area conveniently respectively, Figure 3 gives Figure 1 the cross section of A-A in, the bridge deck of filling empty area conveniently shown by two L-shaped deck boards 6 is constituted, L-shaped deck board 6 sets up on bridge and roadbed, the bridge shown by pile foundation 1, abutment 2 and beam body 15 is constituted, and pile foundation 1 goes into the foundation, and abutment 2 is poured in the upper end of pile foundation 1, to make pile foundation 1 realize the supporting action to abutment 2.The outer side of the upper portion of abutment 2 forms back wall 2, and the middle portion of the outer side of abutment 2 is provided with corbel 4, and the end of beam body 2 is fixed on abutment 2, and the end of L-shaped deck board 6 is arranged on corbel 4, and the part of L-shaped deck board 6 not arranged on corbel 4 is arranged on the roadbed of the outer side of bridge.
[0020] The cross section of L-shaped deck board 6 is L-shaped, and L-shaped deck board 6 is constituted by flat plate part 9 and vertical plate part 10, and the end of flat plate part 9 is arranged on corbel 4, and the part of flat plate part 9 not arranged on corbel 4 is arranged on the roadbed of the outer side of abutment 2.The vertical plate part 10 of L-shaped deck board 6 is arranged on the outer side of corbel 4, and one or more than one filling through hole 11 is formed in the vertical plate part 10, and rubber plug 12 is arranged in filling through hole 11, and rubber plug 12 is used to block filling through hole 11, and rubber plug 12 can be pulled out of filling through hole 11.
[0021] In the process of road service, because the settlement performance of bridge part and roadbed part is inconsistent, when empty area 17 appears below L-shaped deck board 6, rubber plug 12 is pulled out of filling through hole 11, and filler, such as foam expanded concrete 19, composed of foam particles and expanded concrete, is injected into empty area 17 through filling through hole 11, and through the expansion effect in the solidification process of foam expanded concrete 19, not only the filling of empty area 17 is realized, but also the support of L-shaped deck board 6 is realized, avoiding the rupture of L-shaped deck board 6, and avoiding the occurrence of "bridgehead bumping" phenomenon.
[0022] The lower part of L-shaped deck board 6 is cushion 5 of road, and the upper part of L-shaped deck board 6 is base layer 7 of road, and the upper part of base layer 7 is surface layer 8 of road. Longitudinal joint 14 is arranged between the two L-shaped deck boards 6, in order to avoid the moisture entering into the lower road base layer 7 and cushion 5 through longitudinal joint 14, hot asphalt is filled in longitudinal joint 14, and hot asphalt realizes the blocking of longitudinal joint 14 after solidification.
[0023] The lower part of the outer end of the L-shaped bracket 6 is provided with a pillow beam 18, which is arranged in the base layer 7 of the road and supports the outer end of the L-shaped bracket 6. The beam body 15 of the bridge is provided with a expansion joint 16 between the back wall 3. In order to facilitate the rubber plug 12 to be pulled out of the filling through hole 11, the outer side of the rubber plug 12 is provided with an ear plate 13, and the ear plate 13 is provided with a round hole.
[0024] The filling process of the empty area 17 below the L-shaped bracket 6 is as follows:
[0025] Firstly, after the road has been in service for a certain period of time, the soil on the outer side of the L-shaped bracket 6 is cleaned until the rubber plug 12 is exposed, the rubber plug 12 is pulled out of the filling through hole 11, and the rubber plug 12 is confirmed whether the empty area 17 appears below the L-shaped bracket 6, if not, the soil is backfilled; if the empty area 17 appears, the foamed expanded concrete 19 is injected into the empty area 17 through the filling through hole 11, and the rubber plug 12 is inserted back after the injection is completed. Under the expansion effect during the solidification process of the foamed expanded concrete 19, not only the filling of the empty area 17 can be realized, but also the support of the L-shaped bracket 6 can be realized, the fracture of the L-shaped bracket 6 can be avoided, and the "bridgehead bump" phenomenon can be avoided. Compared with the existing excavation of the road for backfilling of the empty area, the road surface will not be damaged, the normal traffic of the road will not be basically affected, and the manpower and material resources are saved.
Claims
1. A bridge approach slab for facilitating filling of void areas, comprising two L-shaped approach slabs (6) disposed on the bridge and the roadbed, the bridge being composed of pile foundations (1), abutments (2), and beams (15), the pile foundations being deeply embedded in the foundation, the abutments being fixed on the abutments, the upper part of the abutments being a back wall (3), corbels (4) being provided on the outer side of the abutments, and the ends of the beams being fixed on the abutments; characterized in that: The cross section of the L-shaped clapboard is L-shaped, the L-shaped clapboard is composed of a flat plate part (9) and a vertical plate part (10), the end of the flat plate part is arranged on the corbel, the vertical plate part is located outside the corbel, a filling through hole (11) is arranged on the vertical plate part, and a detachable rubber plug (12) is arranged in the filling through hole and seals the filling through hole.
2. The bridge patch to facilitate filling of a fall-out area according to claim 1, wherein: A longitudinal joint (14) is arranged between the two L-shaped clapboards (6), and hot pitch is filled in the longitudinal joint.
3. The bridge patch to facilitate filling of a fall-out area according to claim 1 or 2, characterized in that: An ear plate (13) is fixed to the outer surface of the rubber plug (12), and a round hole is arranged on the ear plate.
4. The bridge patch to facilitate filling of a fall-out area according to claim 1 or 2, characterized in that: A pillow beam (18) is arranged below the outer end of the L-shaped clapboard (6), and the pillow beam supports the outer end of the L-shaped clapboard.
5. The bridge patch to facilitate filling of a fall-out area according to claim 1 or 2, wherein: A telescopic joint (16) is arranged between the end of the beam body (15) and the back wall (3).
6. The bridge patch to facilitate filling of a fall-out area according to claim 1 or 2, wherein: After a hollow area (17) appears below the L-shaped clapboard (6), foamed concrete (19) is filled into the hollow area through the filling through hole (11).
7. The bridge patch to facilitate filling of a fall-out area according to claim 1 or 2, wherein: The length of the L-shaped clapboard (6) is 5m-8m, and the thickness of the flat plate part (9) and the vertical plate part (10) of the L-shaped clapboard is 18cm-25cm.