CN210975403U - Treatment structure of high water level soft soil bridgehead roadbed - Google Patents
Treatment structure of high water level soft soil bridgehead roadbed Download PDFInfo
- Publication number
- CN210975403U CN210975403U CN201921542590.5U CN201921542590U CN210975403U CN 210975403 U CN210975403 U CN 210975403U CN 201921542590 U CN201921542590 U CN 201921542590U CN 210975403 U CN210975403 U CN 210975403U
- Authority
- CN
- China
- Prior art keywords
- pipe
- water level
- road
- buoyancy
- bridgehead
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Foundations (AREA)
Abstract
The utility model discloses a high water level weak soil bridgehead road bed's punishment structure, include: a buoyancy body arranged below the underground water level of the soft soil layer and having a bulk density of not more than 1.0g/cm3The floating bodies are arranged at intervals along the passing direction of the road, and each floating body is horizontally arranged along the width direction of the road; the upper part of each buoyancy body is provided with one jacking pipe which is horizontally arranged in the same direction as the buoyancy bodies and is a half part with an opening at one sideThe opening of the top pipe is buckled on the upper surface of the buoyancy body; and the rigid connecting body is connected between the two adjacent jacking pipes. The treatment structure can effectively treat differential settlement of high-water-level soft foundation bridge head subgrades of a newly-built road and an existing road, and solves the problem of bridge head bumping caused by the differential settlement.
Description
Technical Field
The utility model relates to a deep soft basic stratum prevent subsiding punishment technical field among the civil engineering, concretely relates to punishment structure of high water level weak soil bridgehead road bed.
Background
Deep soft foundation areas normally have due to their soil layers: the highway has the characteristics of high compressibility, low strength, small permeability, slow consolidation and high sensitivity, and when the highway is constructed on the basis, if effective measures are not taken for treating soft soil below the highway, the soft soil layer is consolidated and compressed under the action of the load of an upper embankment to generate larger settlement, so that the influence on later-stage operation on safety and comfort is larger.
Especially in the bridge head foundation section, the bridge pile foundation is usually supported on the hard bearing layer below the bridge pile foundation, so that the bridge pile foundation does not generate settlement after being completed, and the bridge head foundation section connected with the bridge is influenced by factors such as manufacturing cost, technology, construction feasibility and the like, so that the treatment scheme of penetrating into a deep and thick soft base layer cannot be adopted. After the highway is finished and operated for a period of time, great differential settlement exists between the bridge head and the roadbed section, and in order to ensure that the difference does not influence the traffic quality, in the existing treatment mode, a transition section with a certain length is usually arranged between the bridge head and the roadbed section for forward connection transition, so that the differential settlement is relieved.
However, if the thickness of the soft foundation is large (the thickness reaches 50-60 m), the groundwater level is high, and according to the theory, the deformation compression layer (the stratum with the additional stress less than or equal to 0.1 time of the self-weight stress) is thick, the treatment mode of arranging the bridge head transition section is difficult to realize in the environment, and the conventional treatment measures are as follows: the drainage consolidation body plus the preloading, powder spraying pile, high-pressure jet grouting pile, prestressed pipe pile and the like can not treat all the deformed compression layers, so that the thickness of the compression layers of 0.3-0.6 times can be treated in actual construction, the control of construction quality is difficult, and large post-construction settlement can still be generated after completion, which causes serious bumping at the bridge head.
Therefore, the existing treatment measures cannot achieve satisfactory effects on the differential settlement prevention treatment of the high-water-level soft foundation bridge head roadbed.
SUMMERY OF THE UTILITY MODEL
There is between here, the utility model provides a treatment structure of high water level weak soil bridgehead road bed to the difference nature of effective treatment high water level soft basic bridgehead road bed subsides, solves the bridgehead problem of jumping car because of its production.
In order to solve the technical problem, the utility model provides a high water level weak soil bridgehead roadbed's punishment structure sets up in the soil body of bridgehead roadbed section road surface structural layer below, and it includes:
the buoyancy bodies are arranged in the soil body below the underground water level and are made of impervious materials with the volume density not greater than 1.0g/cm3, a plurality of the buoyancy bodies are arranged at intervals along the passing direction of the road, and each buoyancy body is horizontally arranged along the width direction of the road;
the upper part of each buoyancy body is provided with one jacking pipe which is horizontally arranged in the same direction as the buoyancy bodies, the jacking pipes are of a half-pipe structure with one side opened, and the openings of the jacking pipes are buckled on the upper surfaces of the buoyancy bodies; and
and the rigid connecting body is connected between the two adjacent jacking pipes.
Further, the buoyancy body is a hollow box structure.
Further, the rigid connector includes: the grouting pipe and the mortar board are horizontally connected to the lower edges of the openings of the two adjacent jacking pipes, the grouting pipe is coated in the mortar board, a plurality of grouting holes are formed in the pipe wall of the grouting pipe, and the grouting pipes are uniformly arranged at intervals along the length direction of the jacking pipes.
Furthermore, the side wall of the top pipe, which is close to the opening, is provided with a plurality of pipe distribution holes, the plurality of pipe distribution holes are uniformly arranged at intervals along the length direction of the top pipe, and two ends of the grouting pipe are respectively clamped in the corresponding pipe distribution holes of two adjacent top pipes.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model adopts the combined structure of the pipe jacking and the buoyancy body to carry out construction on the bridge head roadbed section of the high water level deep and thick soft foundation; the thin-walled jacking pipe is arranged, the embankment soil in the pipe cavity is replaced, so that the self weight of the embankment is reduced, the arc-shaped top surface of the jacking pipe bears the formation pressure, the stress is uniform, the integrity of the formation stress is better, meanwhile, the jacking pipe can be used as a water passing culvert to discharge the water body in soft soil, the geological environment of a deep soft foundation is improved, and the later maintenance and the re-construction are more convenient through the arch-shaped space provided by the jacking pipe; the two jacking pipes are connected through the rigid connector to form a whole, so that common stress and synchronous settlement are guaranteed; the floating body of the waterproof light material arranged below is used for filling, so that the self weight of the foundation layer is reduced, and the floating body is subjected to buoyancy under the action of underground water, so that an upward acting force is generated on the embankment, and a sinking acting force is reduced; therefore, the dead weight of the foundation on the embankment and the soft soil layer is greatly reduced, and the sinking acting force acting on the deep soft soil layer is also greatly reduced, so that the purpose of controlling the differential settlement of the bridge head foundation of the high-water-level soft foundation is achieved, and the problem of bridge head bumping caused by the differential settlement is effectively solved.
Drawings
Fig. 1 is a schematic side view of the embodiment of the present invention along the road passing direction;
FIG. 2 is an enlarged view of the portion A in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along section B-B (i.e., in the direction of the width of the roadway) in FIG. 1;
FIG. 4 is an enlarged view of the structure of the portion C in FIG. 3;
reference numerals:
1-buoyancy body, 11-buoyancy tank, 12-cover plate
2-jacking pipes, 21-pipe holes,
3-rigid connector, 31-grouting pipe, 32-mortar board,
4-pavement structure layer, 5-embankment filling and 6-soft soil layer.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced components or structures must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be considered as limiting the present invention.
As shown in fig. 1 to 4, for the difference nature settlement problem of solving high water level weak soil bridgehead road bed, the utility model provides a structure is handled to high water level weak soil bridgehead road bed suits to be under construction in the higher deep soft basic area of groundwater level, specifically sets up in the soil body of the bridgehead road bed section road surface structural layer 4 below that takes place the difference nature easily and subsides, and its concrete structure includes: buoyancy body 1, top pipe 2 and rigid connector 3.
Referring to fig. 1, a buoyant body 1 is arranged in the soil body below the ground water level, and has a volume density of not more than 1.0g/cm3The waterproof material can obtain larger upward buoyancy in a soft soil environment with high water level so as to resist and reduce the sinking pressure in the soft soil environment. Referring to fig. 2, the buoyant body 1 is preferably a watertight lightweight hollow box structure to more effectively reduce the dead weight of the foundation layer and to generate a greater upward force on the embankment.
Referring to fig. 2, the buoyancy body 1 of the present embodiment may be specifically configured as a buoyancy tank 11 with an open upper end, and a cover plate 12 is disposed on the buoyancy tank 11 in a sealing manner, so as to form a hollow tank structure, thereby reducing the volume density of the buoyancy body 1 to the maximum extent and facilitating the manufacturing and construction of the buoyancy body 1.
The buoyancy bodies 1 are arranged at intervals along the passing direction of the road, and each buoyancy body 1 is horizontally arranged along the width direction of the road, so that a plurality of buoyancy providing points are formed.
As shown in fig. 1, the jacking pipes 2 are respectively arranged at the upper part of each buoyancy body 1 and are horizontally arranged in the same direction as the buoyancy bodies 1; meanwhile, the top pipe 2 is a half-pipe structure with one side open, and the opening of the top pipe 2 is buckled on the upper surface of the buoyancy body 1. The hollow jacking pipe 2 is used for replacing embankment soil in the pipe cavity, so that the self weight of the embankment is further reduced, meanwhile, the jacking pipe 2 can be used as a water passing culvert to discharge water in soft soil and improve the geological environment of deep soft foundation, and the later maintenance and re-construction are more convenient through the arch space provided by the jacking pipe 2; and after covering the soil body in the later stage, the arc-shaped top surface of the top pipe 2 bears the formation pressure, the stress is uniform, and the integrity of the formation stress is better.
In the embodiment, the top pipe 2 is a thin-wall reinforced concrete pipe or a thin-wall steel pipe with the pipe diameter of 0.8-1.5 m and the pipe wall thickness of about 0.15m, so as to form a thin-wall pipe with higher strength, and the self weight of the embankment can be reduced to the maximum extent under the condition of meeting the strength requirement, and more embankment soil bodies can be replaced to reduce the self weight of the embankment.
Meanwhile, in order to facilitate the arrangement of the rigid connector 3, a plurality of pipe distribution holes 21 may be formed in the side wall of the top pipe 2 close to the opening, and the plurality of pipe distribution holes 21 are arranged at regular intervals along the length direction of the top pipe 2.
Referring to fig. 1 and 3, the rigid connecting body 3 is connected between two adjacent jacking pipes 2 to integrate the jacking pipes 2, so as to ensure common stress and synchronous settlement.
Referring to fig. 3 and 4, the best form of the rigid connection body 3 is a plate-shaped structure horizontally connected to the lower edge of the opening of the top pipe 2, thereby providing excellent stress and structural stability for the surrounding soft foundation soil. In particular to the present embodiment, the rigid connector 3 comprises: the slip casting pipe 31 and the mortar board 32 of edge under the opening of two adjacent push pipes 2 of horizontal connection, the cladding of slip casting pipe 31 has been seted up a plurality of slip casting holes in the mortar board 32 on the pipe wall of slip casting pipe 31, and the even interval arrangement of length direction along push pipe 2 of slip casting pipe 31 is a plurality of. In specific implementation, two ends of the grouting pipe 31 can be respectively clamped in the corresponding pipe distribution holes 21 of the two adjacent top pipes 2, then mortar is poured through the grouting pipe 31, the mortar extends into peripheral soft soil from the grouting hole of the grouting pipe 31, and finally the mortar is solidified to form a mortar board 32, and the mortar board 32 takes the grouting pipe 31 as a framework to fixedly connect the adjacent top pipes 2 into a whole.
Certainly, if in the environment of excavation construction, the construction of the rigid connecting body 3 can directly adopt a form of reinforced concrete pouring, a reinforcement cage is arranged between two adjacent jacking pipes 2 to serve as a framework, then mortar or concrete is poured to form a plate-shaped structure for connecting the two jacking pipes 2, and the structure is stable and convenient to construct.
The treatment structure is constructed in a high-water-level deep and thick soft foundation bridge head roadbed section, a combined structure of the top pipes 2 and the buoyancy bodies 1 is adopted, and two adjacent top pipes 2 are connected through the rigid connecting bodies 3 to form a whole, so that common stress and synchronous settlement are guaranteed; on one hand, the dead weight of the stratum is reduced through the jacking pipes 2 and the buoyancy bodies 1, and on the other hand, the buoyancy provided by underground water of the high-water-level deep soft foundation stratum is utilized, so that an upward acting force is generated on the embankment, and a sinking acting force is reduced; therefore, the dead weight of the embankment and the foundation on the soft soil layer 6 is greatly reduced, and the sinking acting force acting on the deep soft soil layer 6 is also greatly reduced, so that the purpose of controlling the differential settlement of the high-water-level soft foundation bridge head foundation is achieved, and the problem of bridge head bumping caused by the differential settlement is effectively solved.
The treatment structure of the high-water-level soft soil bridgehead roadbed is applicable to treatment of a newly-built high-water-level soft soil bridgehead roadbed, and is strong in construction operability and simple in process, and the specific construction method comprises the following steps:
s11, excavating a high-water-level soft soil ground at the bridge head section, excavating to a depth near the underground water level of a soil body, further excavating a foundation pit, wherein the foundation pit is horizontally communicated along the width direction of the road, and a plurality of foundation pits are excavated at uniform intervals along the passing direction of the road, so that a plurality of spaces for embedding the buoyancy bodies 1 are provided;
s12, correspondingly burying a buoyancy body 1 in each foundation pit; the buoyancy body 1 used in the step preferably adopts a structure of a buoyancy tank 11 and a cover plate 12, the buoyancy tank 11 with an open upper end is placed in a foundation pit during construction, then a reinforced concrete slab is poured or installed on the upper part of the buoyancy tank 11, and the buoyancy tank 11 is sealed to form the lightweight, hollow and watertight buoyancy body 1;
s13, respectively placing a top pipe 2 above each buoyancy body 1, wherein the lower side of each top pipe 2 is opened and buckled on the upper surface of each buoyancy body 1;
s14, connecting two adjacent jacking pipes 2 through a rigid connector 3; in the field construction of the rigid connector 3, a rigid support member can be connected between the lower edges of the openings of the two adjacent jacking pipes 2, the rigid support member can be a common steel reinforcement cage, or the grouting pipes 31 in the treatment structure can be directly adopted, the grouting pipes 31 are respectively connected with the jacking pipes 2 on one side, and then mortar or concrete is poured to form a plate-shaped structure for connecting the two jacking pipes 2;
and S15, filling embankment fillers in the excavated part to form a roadbed with the compactness meeting the requirement and the height matched with the embankment.
Therefore, the treatment of the high-water level soft soil bridge head roadbed under the newly-built highway environment is completed, and then the pavement structure layer 4 is paved on the upper surface of the roadbed as in the conventional highway construction, so that the bridge head and the pavement can be connected in sequence.
Meanwhile, the treatment structure of the high-water-level soft soil bridgehead roadbed is also very suitable for performing non-excavation treatment on the high-water-level soft soil bridgehead roadbed of the existing traffic road, finishing roadbed treatment under the condition of not blocking traffic, and solving the problem of bridgehead vehicle jump, and the specific construction method comprises the following steps:
s21, jacking a round pipe body near the underground water level of the embankment soil body at the bridge head section, enabling the round pipe body to horizontally penetrate through the embankment along the width direction of the road, and uniformly arranging a plurality of round pipe bodies at intervals along the passing direction of the road; it should be noted here that, because the road is under the environment of the high water level soft foundation soil layer, the embankment soil body has obvious difference in tightness due to artificial embankment filling during construction, and after long-time rolling after operation, that is, as shown in fig. 1, the soil body above the ground water level is tighter, which is similar to the embankment formed by compaction of the artificial embankment filling material in step S15 during treatment construction of the newly-built high water level soft soil bridgehead roadbed, and of course, the embankment may be naturally formed by vehicle operation, but the rolling skilled in the art is habitually and uniformly called that the part of soil body is embankment filling 5, and the soil body below the ground water level is called as soft soil layer 6 because the soil body has higher water content and is softened and still maintains soft soil quality;
in the step, the concrete jacking mode of the round pipe body can be a pressure jacking mode, a pipe ramming mode and the like which are commonly used in capital construction; the round pipe body used here can be a complete thin-wall reinforced concrete pipe, the pipe walls of the middle parts of the two sides of the complete pipe body are provided with a plurality of pipe distribution holes 21 in advance, and the pipe distribution holes 21 are uniformly arranged at intervals along the length direction of the pipe body; the round pipe body can also be a combined pipe formed by assembling two half-pipe structures, the two half-pipes are arranged at the upper and lower positions when the round pipe body is pushed in, the pipe body is also provided with a plurality of pipe distribution holes 21, the pipe distribution holes 21 are specifically arranged on the upper half-pipe body and are positioned close to the lower edge opening of the half-pipe body, and the plurality of pipe distribution holes are uniformly arranged at intervals along the length direction of the half-pipes;
s22, removing soil in the circular tube body;
s23, punching a rigid connector 3 into a soil body on the outer side of the circular pipe body through the pipe distribution holes 21 preset in the pipe walls of the middle parts of the two sides of the circular pipe body, so that two adjacent circular pipe bodies are connected into a whole through the rigid connector 3; in the field construction, the following method is preferably adopted: firstly, the grouting pipes 31 are driven into the soil body on the outer side through the pipe distribution holes 21 on the circular pipe bodies, the other ends of the grouting pipes 31 are inserted into the pipe distribution holes 21 on the adjacent circular pipe bodies, then mortar is poured into the grouting pipes 31, the mortar is enabled to permeate into the soil body through the grouting holes on the pipe walls of the grouting pipes 31, more mortar particularly permeates into the soft soil layer 6, the mortar around the plurality of grouting pipes 31 are connected into a flat shape, and the mortar is solidified to form the rigid connecting body 3 fixedly connecting the circular pipe bodies, the grouting pipes 31 and the soil body;
s24, removing the pipe wall of the round pipe body below the rigid connector 3 to enable the round pipe body to form a top pipe 2 of a semi-tubular arch structure; in this step, if a complete thin-walled reinforced concrete pipe is adopted in step S21, the pipe wall of the round pipe body below the rigid connector 3 is crushed to form a semi-tubular top pipe 2; if the step S21 adopts a combined pipe formed by assembling two half pipe structures, the half pipe body at the lower part is drawn out, and the half pipe body at the upper part is taken as the top pipe 2;
s25, excavating a soil body (specifically a soft soil layer 6 shown in the figure 1) below the jacking pipe 2 to form a foundation pit which is horizontally communicated along the width direction of the road, wherein the size of the foundation pit is adapted to the size of the buoyancy body 1;
s26, putting the buoyancy body 1 into the foundation pit, and enabling the upper surface of the buoyancy body 1 to be pressed against the lower parts of the top pipe 2 and the part of the rigid connecting body 3.
It should be noted that the above preferred embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (4)
1. The utility model provides a high water level weak soil bridgehead road bed's punishment structure, sets up in the soil body of bridgehead road bed section road surface structure layer below, its characterized in that includes:
a buoyancy body arranged in the soil body below the underground water level and having a volume density of not more than 1.0g/cm3The floating bodies are arranged at intervals along the passing direction of the road, and each floating body is horizontally arranged along the width direction of the road;
the upper part of each buoyancy body is provided with one jacking pipe which is horizontally arranged in the same direction as the buoyancy bodies, the jacking pipes are of a half-pipe structure with one side opened, and the openings of the jacking pipes are buckled on the upper surfaces of the buoyancy bodies; and
and the rigid connecting body is connected between the two adjacent jacking pipes.
2. The treatment structure of a high water level soft soil bridgehead subgrade according to claim 1,
the buoyancy body is a hollow box structure.
3. The treatment structure of a high water level soft soil bridgehead subgrade according to claim 1,
the rigid connector includes: the grouting pipe and the mortar board are horizontally connected to the lower edges of the openings of the two adjacent jacking pipes, the grouting pipe is coated in the mortar board, a plurality of grouting holes are formed in the pipe wall of the grouting pipe, and the grouting pipes are uniformly arranged at intervals along the length direction of the jacking pipes.
4. The treatment structure of a high water level soft soil bridgehead subgrade according to claim 3,
the side wall of the top pipe, which is close to the opening, is provided with a plurality of pipe distribution holes, the pipe distribution holes are uniformly arranged at intervals along the length direction of the top pipe, and two ends of the grouting pipe are respectively clamped in the corresponding pipe distribution holes of two adjacent top pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921542590.5U CN210975403U (en) | 2019-09-17 | 2019-09-17 | Treatment structure of high water level soft soil bridgehead roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921542590.5U CN210975403U (en) | 2019-09-17 | 2019-09-17 | Treatment structure of high water level soft soil bridgehead roadbed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210975403U true CN210975403U (en) | 2020-07-10 |
Family
ID=71443832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921542590.5U Expired - Fee Related CN210975403U (en) | 2019-09-17 | 2019-09-17 | Treatment structure of high water level soft soil bridgehead roadbed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210975403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485230A (en) * | 2019-09-17 | 2019-11-22 | 招商局重庆交通科研设计院有限公司 | A kind for the treatment of structures and construction method of high water level weak soil Bridgehead by Blastig |
-
2019
- 2019-09-17 CN CN201921542590.5U patent/CN210975403U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485230A (en) * | 2019-09-17 | 2019-11-22 | 招商局重庆交通科研设计院有限公司 | A kind for the treatment of structures and construction method of high water level weak soil Bridgehead by Blastig |
| CN110485230B (en) * | 2019-09-17 | 2024-04-02 | 招商局重庆交通科研设计院有限公司 | Treatment structure and construction method of high-water-level soft soil bridge head roadbed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108560542B (en) | Waste tire coated building slag bidirectional reinforcement and construction method thereof | |
| CN110485230B (en) | Treatment structure and construction method of high-water-level soft soil bridge head roadbed | |
| CN111305027B (en) | Rapid repairing construction method and repairing structure for subsidence of karst area pavement | |
| CN111236260A (en) | Variable-rigidity combined type prefabricated double-row pile supporting structure and construction method thereof | |
| CN111501461A (en) | Rapid temporary and permanent disposal method for half-width cracking disease of excavated and filled roadbed | |
| CN109440812B (en) | Retaining wall structure and construction method thereof | |
| CN210975403U (en) | Treatment structure of high water level soft soil bridgehead roadbed | |
| CN210163910U (en) | Pipeline pipe jacking receiving well foundation pit supporting structure | |
| CN109914439B (en) | Combined slope support construction method | |
| CN216275591U (en) | Anti-settlement structure adopting prestressed concrete pipe pile composite foundation | |
| JP3440169B2 (en) | Artificial island ground and its construction method | |
| CN212426563U (en) | Roadbed structure with light materials backfilled above subway | |
| CN211228521U (en) | Frame bridge supporting construction | |
| CN212405174U (en) | Supporting structure and building of soft rock foundation pit at lower part of upper soil layer | |
| CN212670237U (en) | Repairing structure for subsidence of karst area pavement | |
| CN114657851A (en) | Roadbed disposal method for river pond area crossing | |
| CN211815255U (en) | Rock mass abrupt slope road structure | |
| CN211621441U (en) | Vertical dike structure | |
| CN210887256U (en) | Straight combined sheet pile-ground wall-connecting type frame of water retaining cofferdam | |
| CN211498907U (en) | Waterproof curtain at end of underwater channel foundation pit along two sides of water | |
| CN109338909B (en) | Integral pier reinforcing structure and construction method thereof | |
| CN108677960B (en) | Construction method for pit-in-pit under complex geological conditions | |
| CN111519603A (en) | Device for comprehensively treating uneven settlement of underground buried pipe of soft soil foundation by combination of replacement and filling and grouting and construction method | |
| CN214423406U (en) | A apron is contained for pipeline protection | |
| CN219158994U (en) | Deep soft soil area ultra-deep large-diameter round pipe jacking working well foundation pit supporting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200710 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |