CN1195125C - Highway bridge abutment wedge flexible attachment strap - Google Patents
Highway bridge abutment wedge flexible attachment strap Download PDFInfo
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- CN1195125C CN1195125C CNB031342213A CN03134221A CN1195125C CN 1195125 C CN1195125 C CN 1195125C CN B031342213 A CNB031342213 A CN B031342213A CN 03134221 A CN03134221 A CN 03134221A CN 1195125 C CN1195125 C CN 1195125C
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Abstract
The present invention relates to a wedge-shaped flexible attachment strap for highway bridge abutments. The present invention is characterized in that the wedge-shaped flexible attachment strap comprises at least one layer of double-layer earthwork separation chamber and double layers of top layer single layer earthwork separation chamber, wherein the double-layer earthwork separation chamber is arranged on the bridge abutments; the top layer single layer earthwork separation chamber is arranged or is not arranged under the earthwork separation chamber; a bottom layer single layer earthwork separation chamber is arranged on a bearing platform or a bottom layer foundation; at least two layers of middle layer single layer earthwork separation chamber is arranged between the top layer single layer earthwork separation chamber or the two-layer earthwork separation chamber and the bottom layer single layer earthwork separation chamber. The present invention uses spatial structures of reinforced layers of the earthwork separation chambers to form a flexible structure layer with good integrity and high rigidity, a road and bridge transition section is used for arrangement of wedge-shaped reinforcing region, smooth transition of the rigidity bridge abutments and flexible road bed modulus is realized, oversized diversity settlement is eliminated, smooth settlement transition section is formed, and the goal of the prevention of bridge abutment vehicle jumping is achieved. The present invention has the advantages of large foundation bearing capacity, high rigidity, good erosion resistance performance, good corrosion resistance performance, aging resistance, high material strength, low engineering cost, etc. The wedge-shaped flexible attachment strap can be popularized and used on the bridge abutments.
Description
Technical field
The invention belongs to and belong to building of bridge and viaduct; The package technique field of bridge is specifically related to the bridge pier of bridge member, the highway bridge abutment wedge shape soft patch of abutment.
Background technology
Bumping at bridge-head is meant that road is out of shape with the road surface that is connected the zone appearance or the attachment strap of the bridge platform back of the body, fracture, even hole groove, thereby making vehicle ' be subjected to impacting the back through this zone takes place obviously to jump, jolt, bumping at bridge-head is one of common disease of highway, it also is a big technical barrier that always perplexs the highway industry for many years, not only have a strong impact on the comfortableness of driving, reduce the travel speed of vehicle and the traffic capacity of road, influence the use and the vehicle life-span of bridge, and can greatly increase the HIGHWAY MAINTENANCE maintenance costs, even initiation road traffic accident, produce bad social influence, grievous injury the economic and social benefit of high-grade highway, become urgent problem in the high-grade highway construction.For solving problem of bumping at bridge-head, taked the multiple technologies scheme in the highway engineering.First kind of technical scheme is to adopt to improve the density that roadbed bankets; Second kind of technical scheme is to change gravel, rubble, dirt filler; The third technical scheme is to adopt geonet or geo-grid reinforced structure; The 4th kind of technical scheme is to adopt light materials such as flyash, polystyrene foam plastics, foaming perlite to fill out; The 5th kind of technical scheme is to adopt default reverse gradient, changeover portion road surface road pavement is set handles.
In above-mentioned every technical scheme, reducing roadbed compressive strain with the means that improve platform back pressure solidity index, is technical scheme commonly used at present.On the one hand the sedimentation of banketing of the platform back of the body comprises ground and subgrade settlement two parts, and this technical scheme has only been noticed the control of roadbed part sedimentation, and has ignored the control of ground base section sedimentation, generally speaking, in the sedimentation of the platform back of the body the sedimentation of base section play a leading role.On the other hand, platform back of the body construction space is narrow, and the use of large-scale compacting equipment is restricted, and it is very difficult to meet the requirements of degree of compaction.Therefore, fill the very difficult generation of avoiding effectively than the big-difference sedimentation with the degree of compaction control indexes platform back of the body.
In recent years, solve the attention that problem of bumping at bridge-head has been subjected to engineering circle by geonet or geo-grid reinforced earth body, geonet or geo-grid are as a kind of material of plane structure, raising effect to subgrade stiffness is little, restriction to soil lateral is also very limited, to the requirement of filler than higher.This reinforcement can only be got rid of roadbed compressive strain, can not get rid of the distortion that foundation settlement produces, and can only use at the position preferably at ground, and the position relatively poor at foundation condition can not solve problem of bumping at bridge-head.
End of the bridge rigidity attachment strap is that abutment and embankment joining place are relaxed transition by armored concrete slab is set, and the road surface change of longitudinal grade is limited in the permissible range, reaches the purpose of eliminating the end of the bridge differential settlement.In order to reach the purpose of eliminating differential settlement, avoid producing the discomfort of driving, effectively abutment attachment strap length should be enough to keep its gradient in the requirement that can bear whole traffic loads below 1/200.When if platform is carried on the back settlement after construction greater than 6cm, attachment strap length needs more than the 12m, and practice of construction rigidity attachment strap length is all less than 10m at present.The investigation result explanation is provided with end of the bridge rigidity attachment strap, and treatment effect is also not obvious, has increased some new diseases again under a lot of situations.
Soft foundation to road-bridge transition section carries out consolidation process, is the key issue of control bumping at bridge-head, handles by ground stabilization, and the ground settlement after construction of approach embankment is reduced greatly.Though but adopt which kind of flexible foundation treatment method, and all can not solve the soft foundation settlement issues at all, be difficult to eliminate the bumping at bridge-head phenomenon.
In platform back of the body certain limit, change underfill material, domestic mainly is graded broken stone, natural gravel, dirt, flyash, developed countries removes the above-mentioned material place, also use the EPS light filler, can reduce roadbed compressive strain by changing filler, strengthen construction investment, can not get rid of the sedimentation that ground produces.
Adopt gradual change concrete pile radical cure bumping at bridge-head to carry out useful discussion in theory, it is to fill the suitable transition section length of selection on the roadbed that finishes, bore the hole about φ 40cm, it is long to shorten stake gradually, in the hole, build expansive concrete, solve subgrade deformation, increase the roadbed compactness, form gradual change concrete pile modulus changeover portion, eliminate bumping at bridge-head.This theory still is in the research at present, does not implement.
Adopt reinforced earth abutment structure to reduce abutment rigidity, the rigidity of dwindling abutment and embankment is poor, makes its joining place by the compressive strain and the consolidation settlement even transition of banketing that traffic load causes, and reaches the longitudinal gradient sudden change of elimination road surface and prevents bumping at bridge-head.The flexible abutment of reinforced earth only is applicable to indivedual simple bridge construction forms, and difficulty of construction is big, applies being restricted.
Using slow expanding material control bumping at bridge-head, is the problem of abroad studying at present.This research imagination finds a kind of swell increment and the controllable backfilling material of speed of expansion, make the swell increment of nearly abutment offset the sedimentation of the platform back of the body, keep former absolute altitude constant, the swell increment of abutment far away reduces gradually, the sedimentation of the partial offset platform back of the body, until consistent, thereby the abutment and the roadbed of stiff stability gently coupled together with the subgrade settlement amount.This slow expanding material, the one, on market, be difficult at present buy, the 2nd, be difficult to its speed of expansion of control.
Summary of the invention
Technical problem underlying to be solved by this invention is to overcome the shortcoming of technique scheme, and the highway bridge abutment wedge shape soft patch that a kind of bearing capacity of foundation soil is big, rigidity big, anti-impact is lost and corrosion resistance is good, ageing-resistant, the strength of materials is high, engineering cost is low is provided.
Solving the problems of the technologies described above the technical scheme that is adopted is: be provided with the double-deck geotechnical grid of one deck on abutment at least, and if do not establish top layer individual layer geotechnical grid under the double-deck geotechnical grid, cushion cap or bottom ground are provided with bottom individual layer geotechnical grid, between top layer individual layer geotechnical grid or double-deck geotechnical grid and bottom individual layer geotechnical grid, be provided with two-layer intermediate layer individual layer geotechnical grid at least, between double-deck geotechnical grid and adjacent one deck intermediate layer individual layer geotechnical grid, between intermediate layer individual layer geotechnical grid and the adjacent one deck intermediate layer individual layer geotechnical grid, compacting has filler between intermediate layer individual layer geotechnical grid and the bottom individual layer geotechnical grid.
The ordering of intermediate layer of the present invention individual layer geotechnical grid is: the length of top one deck intermediate layer individual layer geotechnical grid is greater than the length of adjacent following one deck intermediate layer individual layer geotechnical grid, and intermediate layer individual layer geotechnical grid is arranged in tapered region from top to bottom.
The structure of top layer individual layer geotechnical grid of the present invention, intermediate layer individual layer geotechnical grid, bottom individual layer geotechnical grid is: the upper surface compacting skim soil layer at geotechnical grid constitutes.Double-deck geotechnical grid of the present invention is: at the upper surface compacting skim soil layer of one deck geotechnical grid, at the upper surface of skim soil layer another layer of compacting geotechnical grid again, at the upper surface compacting skim soil layer of another layer geotechnical grid.
Geotechnical grid of the present invention is 3 D stereo net structure or three-dimensional honeycomb structure.
The cross section of geotechnical grid of the present invention is prismatic or the regular hexagon that area equates, the height of geotechnical grid is 10～20cm, and the volume of each lattice of geotechnical grid is 0.004～0.008m
3
The present invention utilizes stereochemical structure and unique reinforcement mechanism of geotechnical grid back-up coat, formation good integrity, the flexible structure layer that rigidity is big, adopt the modulus gradual change principle, consider ground and roadbed two parts sedimentation factor simultaneously, at road-bridge transition section the wedge shape stabilization zone is set, flexible structure layer one end is fixed in abutment, the other end links to each other with roadbed, realize the smooth transition of rigidity abutment and flexible subgrade modulus, eliminate excessive differential subsidence, form mild sedimentation changeover portion, reach the purpose that the control abutment is jumped car.The present invention compares with device with the equipment that existing solution abutment is jumped car, has advantages such as bearing capacity of foundation soil is big, rigidity big, anti-impact is lost and corrosion resistance is good, ageing-resistant, the strength of materials is high, engineering cost is low, can promote the use of on abutment.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is the structural representation of the embodiment of the invention 2.
Fig. 3 is the structural representation of the embodiment of the invention 3.
Fig. 4 is the structural representation of the embodiment of the invention 4.
Fig. 5 is the local enlarged diagram of I in Fig. 1～4.
Fig. 6 is the local enlarged diagram of II in Fig. 1～4.
Fig. 7 is a geotechnical grid 9 and the schematic diagram that connects of geotechnical grid 9.
Fig. 8 is a geotechnical grid 9 and the schematic diagram that connects of abutment 1.
The specific embodiment
The present invention is described in more detail below in conjunction with drawings and Examples, but the invention is not restricted to these embodiment.
Fig. 1 has provided the structural representation of the embodiment of the invention 1.In Fig. 1, Fig. 5～8, the highway bridge abutment wedge shape soft patch of present embodiment is made of last double-deck geotechnical grid 2, following double-deck geotechnical grid 3, top layer individual layer geotechnical grid 4, intermediate layer individual layer geotechnical grid 5, bottom individual layer geotechnical grid 6, connection ear 11, attachment pegs 12.
Be connected with double-deck geotechnical grid 2, following double-deck geotechnical grid 3, top layer individual layer geotechnical grid 4 on the abutment 1, go up the length of the length of double-deck geotechnical grid 2 greater than following double-deck geotechnical grid 3, the length of following double-deck geotechnical grid 3 is greater than the length of top layer individual layer geotechnical grid 4.Double-deck geotechnical grid 3 and top layer individual layer geotechnical grid 4 constitute the flexible support of abutment 1 down.The cushion cap 8 that is connected as a single entity with pile 7 is provided with bottom individual layer geotechnical grid 6, between top layer individual layer geotechnical grid 4 and bottom individual layer geotechnical grid 6, be provided with three layers of intermediate layer individual layer geotechnical grid 5, the equal in length of bottom one deck intermediate layer individual layer geotechnical grid 5 and bottom individual layer geotechnical grid 6, stretch into and be the reinforcement layer in the awl slope, with diffusion-induced stress, reduce sedimentation.According to the thickness of the layer more multi-layered intermediate layer individual layer geotechnical grid 5 can be set also.Between following double-deck geotechnical grid 3 and the adjacent one deck intermediate layer individual layer geotechnical grid 5, between intermediate layer individual layer geotechnical grid 5 and the adjacent one deck intermediate layer individual layer geotechnical grid 5, compacting has soil layer between intermediate layer individual layer geotechnical grid 5 and the bottom individual layer geotechnical grid 6.The length of intermediate layer individual layer geotechnical grid 5 shortens from top to bottom gradually, forms wedge shape, forms the layer flexible attachment strap deck of a determining deviation in tapered region, improves the subgrade modulus in this district, realizes the hard and soft smooth transition of road-bridge transition section modulus.On cushion cap 8 and bottom ground, lay bottom individual layer geotechnical grid 6 during construction earlier, on bottom individual layer geotechnical grid 6, lay one deck soil, use the road roller compacting, re-lay one deck intermediate layer individual layer geotechnical grid 5, lay one deck soil at one deck intermediate layer individual layer geotechnical grid 5 again, use the road roller compacting, re-lay another layer intermediate layer individual layer geotechnical grid 5, lay so repeatedly until to top layer individual layer geotechnical grid 4, lay double-deck geotechnical grid 3 and last double-deck geotechnical grid 2 down at last, use the road roller compacting.
In Fig. 5, the individual layer of present embodiment ± worker's lattice chamber is upper surface compacting skim soil layer 10 formations at geotechnical grid 9.
In Fig. 6, the last double-deck geotechnical grid 2 of present embodiment and following double-deck geotechnical grid 3 are the upper surface compacting skim soil layer 10 at one deck geotechnical grid 9, another layer of compacting geotechnical grid 9 on skim soil layer 10 again, compacting skim soil layer 10 constitutes on another layer geotechnical grid 9 again.
In Fig. 7, the geotechnical grid 9 of present embodiment be shaped as the 3 D stereo net structure, adopt ultrasonic bonding to make with polyethylene or polypropylene material flitch, the height of each piece geotechnical grid 9 is 1 5cm, each lattice of geotechnical grid 9 are isopyknic net structure, the cross section of geotechnical grid 9 each lattice is the prismatic that area equates, the volume of each lattice of geotechnical grid 9 is 0.006m
3, the filler that roadbed filling requires is satisfied in filling in each lattice of geotechnical grid 9, through the road roller compacting.The height of geotechnical grid 9 also can be 10cm, and the volume of each lattice of geotechnical grid 9 also can be 0.004m
3The height of geotechnical grid 9 also can be 20cm, and the volume of each lattice of geotechnical grid 9 also can be 0.008m
3Geotechnical grid 9 can also be to be made of the identical honeycomb structure that is connected as a single entity of volume, and the height of honeycomb structure geotechnical grid and the volume of each lattice are identical with above-mentioned three kinds of geotechnical grids 9.The both sides of each piece geotechnical grid 9 have been connected as a single entity with geotechnical grid 9 and have connected ear 11, geotechnical grid 9 with connect ear 11 and also can weld and be connected as a single entity, a geotechnical grid 9 adopts attachment pegs 12 to connect with an adjacent geotechnical grid 9 at the position that is connecting ear 11.
In Fig. 8, it is to adopt attachment pegs 12 that geotechnical grid 9 is fixedly connected with abutment 1 by connecting ear 11 that the geotechnical grid 9 of present embodiment connects with abutment 1, connects ear 11 and is connected as a single entity with geotechnical grid 9.
Fig. 2,5～8 has provided the structural representation of the embodiment of the invention 2.In Fig. 2,5～8, the highway bridge abutment wedge shape soft patch of present embodiment is made of last double-deck geotechnical grid 2, following double-deck geotechnical grid 3, top layer individual layer geotechnical grid 4, intermediate layer individual layer geotechnical grid 5, bottom individual layer geotechnical grid 6, connection ear 11, attachment pegs 12.
Go up double-deck geotechnical grid 2, double-deck geotechnical grid 3, top layer individual layer geotechnical grid 4 are identical with embodiment 1 with the connecting relation of abutment 1 down, the top and the abutment 1 of pile 7 are connected as a single entity.Bottom individual layer geotechnical grid 6 is arranged on the bottom ground, and bottom individual layer geotechnical grid 6 is identical with embodiment 1 with middle individual layer geotechnical grid 5 between the top layer individual layer geotechnical grid 4.
Go up double-deck geotechnical grid 2, double-deck geotechnical grid 3, intermediate layer individual layer geotechnical grid 5 are identical with embodiment 1 with the structure of bottom individual layer geotechnical grid 6 down, geotechnical grid 9 is identical with embodiment 1 by the connecting relation of connection ear 11 and abutment 1 with the connecting relation and the geotechnical grid 9 of geotechnical grid 9.The height of each piece geotechnical grid 9 is 15cm, and each lattice of geotechnical grid 9 are isopyknic net structure, and the cross section of geotechnical grid 9 each lattice is the prismatic that area equates, the volume of each lattice of geotechnical grid 9 is 0.006m
3, the filler that roadbed filling requires is satisfied in filling in each lattice of geotechnical grid 9, through the road roller compacting.The height of geotechnical grid 9 also can be 10cm, and the volume of each lattice of geotechnical grid 9 also can be 0.004m
3The height of geotechnical grid 9 also can be 20cm, and the volume of each lattice of geotechnical grid 9 also can be 0.008m
3Geotechnical grid 9 can also be to be made of the identical honeycomb structure that is connected as a single entity of volume, and the height of honeycomb structure geotechnical grid and the volume of each lattice are identical with above-mentioned three kinds of geotechnical grids 9.
Fig. 3 has provided the structural representation of the embodiment of the invention 3.In Fig. 3, Fig. 5～8, the highway bridge abutment wedge shape soft patch of present embodiment is made of last double-deck geotechnical grid 2, following double-deck geotechnical grid 3, intermediate layer individual layer geotechnical grid 5, bottom individual layer geotechnical grid 6, connection ear 11, attachment pegs 12.
Be connected with double-deck geotechnical grid 2, following double-deck geotechnical grid 3 on the abutment 1, going up the length of the length of double-deck geotechnical grid 2 greater than following double-deck geotechnical grid 3, following double-deck geotechnical grid 3 constitutes the flexible support of abutments 1.The cushion cap 8 that is connected as a single entity with pile 7 is provided with bottom individual layer geotechnical grid 6, be provided with two-layer intermediate layer individual layer geotechnical grid 5 between double-deck geotechnical grid 3 and the bottom individual layer geotechnical grid 6 down, the equal in length of bottom one deck intermediate layer individual layer geotechnical grid 5 and bottom individual layer geotechnical grid 6 also can be provided with more multi-layered intermediate layer individual layer geotechnical grid 5 according to the thickness of the layer.Between following double-deck geotechnical grid 3 and the adjacent one deck intermediate layer individual layer geotechnical grid 5, between intermediate layer individual layer geotechnical grid 5 and the adjacent one deck intermediate layer individual layer geotechnical grid 5, compacting has soil layer between intermediate layer individual layer geotechnical grid 5 and the bottom individual layer geotechnical grid 6.The length of intermediate layer individual layer geotechnical grid 5 shortens from top to bottom gradually, forms wedge shape, forms the layer flexible attachment strap deck of a determining deviation in tapered region, improves the subgrade modulus in this district, realizes the hard and soft smooth transition of road-bridge transition section modulus.On cushion cap 8 and bottom ground, lay bottom individual layer geotechnical grid 6 during construction earlier, on bottom individual layer geotechnical grid 6, lay one deck soil, use the road roller compacting, re-lay one deck intermediate layer individual layer geotechnical grid 5, on intermediate layer individual layer geotechnical grid 5, lay one deck soil again, use the road roller compacting, re-lay another layer intermediate layer individual layer geotechnical grid 5, lay so repeatedly, lay double-deck geotechnical grid 3 and last double-deck geotechnical grid 2 down at last, use the road roller compacting.The height of geotechnical grid 9 also can be 10cm, and the volume of each lattice of geotechnical grid 9 also can be 0.004m
3The height of geotechnical grid 9 also can be 20cm, and the volume of each lattice of geotechnical grid 9 also can be 0.008m
3Geotechnical grid 9 can also be to be made of the identical honeycomb structure that is connected as a single entity of volume, and the height of honeycomb structure geotechnical grid and the volume of each lattice are identical with above-mentioned three kinds of geotechnical grids 9.
Go up double-deck geotechnical grid 2, double-deck geotechnical grid 3, intermediate layer individual layer geotechnical grid 5 are identical with embodiment 1 with the structure of bottom individual layer geotechnical grid 6 down, geotechnical grid 9 is identical with embodiment 1 by the connecting relation of connection ear 11 and abutment 1 with the connecting relation and the geotechnical grid 9 of geotechnical grid 9.The height of each piece geotechnical grid 9 is 15cm, and each lattice of geotechnical grid 9 are isopyknic net structure, and the cross section of geotechnical grid 9 each lattice is the prismatic that area equates, the volume of each lattice of geotechnical grid 9 is 0.006m
3, the filler that roadbed filling requires is satisfied in filling in each lattice of geotechnical grid 9, through the road roller compacting.
Fig. 4 has provided the structural representation of the embodiment of the invention 4.In Fig. 4, Fig. 5～8, the highway bridge abutment wedge shape soft patch of present embodiment is made of last double-deck geotechnical grid 2, intermediate layer individual layer geotechnical grid 5, bottom individual layer geotechnical grid 6, connection ear 11, attachment pegs 12.
Be connected with double-deck geotechnical grid 2 on the abutment 1, be connected to bottom individual layer geotechnical grid 6 at abutment 1 second line of a couplet, bottom individual layer geotechnical grid 6 is arranged on the bottom ground, between double-deck geotechnical grid 2 on the abutment 1 and bottom individual layer geotechnical grid 6, be connected with three layers of intermediate layer individual layer geotechnical grid 5, also on abutment 1, connect more multi-layered intermediate layer individual layer geotechnical grid 5 according to the thickness of the layer.Between last double-deck geotechnical grid 2 and the adjacent one deck intermediate layer individual layer geotechnical grid 5, between intermediate layer individual layer geotechnical grid 5 and the adjacent one deck intermediate layer individual layer geotechnical grid 5, compacting has soil layer between intermediate layer individual layer geotechnical grid 5 and the bottom individual layer geotechnical grid 6.The length of top one deck intermediate layer individual layer geotechnical grid 5 is greater than adjacent following one deck intermediate layer individual layer geotechnical grid 5, intermediate layer individual layer geotechnical grid 5 forms tapered region, form the layer flexible attachment strap deck of a determining deviation in tapered region, improve the subgrade modulus in this district, realized the hard and soft smooth transition of road-bridge transition section modulus.On the bottom ground of compacting, lay bottom individual layer geotechnical grid 6 during construction earlier, on bottom individual layer geotechnical grid 6, lay one deck soil, use the road roller compacting, re-lay one deck intermediate layer individual layer geotechnical grid 6, on one deck intermediate layer individual layer geotechnical grid 6, lay one deck soil again, use the road roller compacting, re-lay another layer intermediate layer individual layer geotechnical grid 5, lay so repeatedly, lay the last double-deck geotechnical grid 2 of end face at last, use the road roller compacting.
Double-deck geotechnical grid 9, intermediate layer individual layer geotechnical grid 5 are identical with embodiment 1 with the structure of bottom individual layer geotechnical grid 6, geotechnical grid 9 is identical with embodiment 1 with the connecting relation of geotechnical grid 9, and geotechnical grid 9 is identical with embodiment 1 with the connecting relation of abutment 1 by connecting ear 11.The height of each piece geotechnical grid 9 is 15cm, and each lattice of geotechnical grid 9 are isopyknic net structure, and the cross section of geotechnical grid 9 each lattice is the prismatic that area equates, the volume of each lattice of geotechnical grid 9 is 0.006m
3, the filler that roadbed filling requires is satisfied in filling in each lattice of geotechnical grid 9, through the road roller compacting.The height of geotechnical grid 9 also can be 10cm, and the volume of each lattice of geotechnical grid 9 also can be 0.004m
3The height of geotechnical grid 9 also can be 20cm, and the volume of each lattice of geotechnical grid 9 also can be 0.008m
3Geotechnical grid 9 can also be to be made of the identical honeycomb structure that is connected as a single entity of volume, and the height of honeycomb structure geotechnical grid and the volume of each lattice are identical with above-mentioned three kinds of geotechnical grids 9.
Claims (6)
1, a kind of highway bridge abutment wedge shape soft patch, it is characterized in that: on abutment [1], be provided with the double-deck geotechnical grid of one deck at least, and if do not establish top layer individual layer geotechnical grid [4] under the double-deck geotechnical grid, cushion cap [8] or bottom ground are provided with bottom individual layer geotechnical grid [6], between top layer individual layer geotechnical grid [4] or double-deck geotechnical grid and bottom individual layer geotechnical grid [6], be provided with two-layer intermediate layer individual layer geotechnical grid [5] at least, between double-deck geotechnical grid and adjacent one deck intermediate layer individual layer geotechnical grid [5], between intermediate layer individual layer geotechnical grid [5] and the adjacent one deck intermediate layer individual layer geotechnical grid [5], compacting has filler between intermediate layer individual layer geotechnical grid [5] and the bottom individual layer geotechnical grid [6].
2, according to the described highway bridge abutment of claim 1 wedge shape soft patch, the ordering that it is characterized in that said intermediate layer individual layer geotechnical grid [5] is: the length of top one deck intermediate layer individual layer geotechnical grid [5] is greater than the length of adjacent following one deck intermediate layer individual layer geotechnical grid [5], and intermediate layer individual layer geotechnical grid [5] is arranged in tapered region from top to bottom.
3, according to claim 1 or 2 described highway bridge abutment wedge shape soft patches, it is characterized in that the structure of said top layer individual layer geotechnical grid [4], intermediate layer individual layer geotechnical grid [5], bottom individual layer geotechnical grid [6] is: the upper surface compacting skim soil layer [10] at geotechnical grid [9] constitutes; Said double-deck geotechnical grid is: at the upper surface compacting skim soil layer [10] of one deck geotechnical grid [9], at the upper surface of skim soil layer [10] another layer of compacting geotechnical grid [9] again, at the upper surface compacting skim soil layer [10] of another layer geotechnical grid [9].
4, according to the described highway bridge abutment of claim 3 wedge shape soft patch, it is characterized in that: said geotechnical grid [9] is 3 D stereo net structure or three-dimensional honeycomb structure.
5, according to the described highway bridge abutment of claim 3 wedge shape soft patch, it is characterized in that: the cross section of said geotechnical grid [9] is prismatic or the regular hexagon that area equates, the height of geotechnical grid [9] is 10～20cm, and the volume of each lattice of geotechnical grid [9] is 0.004～0.008m
3
6, according to the described highway bridge abutment of claim 4 wedge shape soft patch, it is characterized in that: the cross section of said geotechnical grid [9] is prismatic or the regular hexagon that area equates, the height of geotechnical grid [9] is 10～20cm, and the volume of each lattice of geotechnical grid [9] is 0.004～0.008m
3
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| CNB031342213A CN1195125C (en) | 2003-05-30 | 2003-05-30 | Highway bridge abutment wedge flexible attachment strap |
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| CNB031342213A CN1195125C (en) | 2003-05-30 | 2003-05-30 | Highway bridge abutment wedge flexible attachment strap |
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| CN1195125C true CN1195125C (en) | 2005-03-30 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949122B (en) * | 2010-10-25 | 2012-07-04 | 河海大学 | Method for controlling settlement by horizontally drilling at embankment and injecting light weight replacing material under normal traffic circumstance |
| CN102121226B (en) * | 2011-04-02 | 2012-02-08 | 北京工业大学 | Earthquake-resistant bridge abutment with flexible walls |
| CN102635104A (en) * | 2012-04-11 | 2012-08-15 | 华南理工大学 | Wedge-shaped Geocell cement reinforced soil structure for road-bridge connection and construction method thereof |
| CN104790290B (en) * | 2015-04-22 | 2016-04-27 | 兰州铁道设计院有限公司 | The framework groups of springs box-like bridge road transition section structure linked into an integrated entity with abutment |
| CN105862575A (en) * | 2016-05-31 | 2016-08-17 | 中国华电科工集团有限公司 | Structure for abutment roadbed and model selection method for structure |
| CN107059596A (en) * | 2016-12-24 | 2017-08-18 | 中铁十八局集团有限公司 | One kind improvement transition segment structure |
| CN112176853A (en) * | 2020-11-04 | 2021-01-05 | 武汉大学 | Pile-supported damping reinforced earth abutment and construction method thereof |
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| CN1455050A (en) | 2003-11-12 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CCCC Fourth Highway Engineering Co., Ltd. Assignor: Changan Univ. Contract record no.: 2010990000627 Denomination of invention: Highway bridge abutment wedge flexible attachment strap Granted publication date: 20050330 License type: Exclusive License Open date: 20031112 Record date: 20100811 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 Termination date: 20130530 |