CN213389545U - Foundation supporting structure of existing pipeline under soft soil area newly-built road bed - Google Patents
Foundation supporting structure of existing pipeline under soft soil area newly-built road bed Download PDFInfo
- Publication number
- CN213389545U CN213389545U CN202021412520.0U CN202021412520U CN213389545U CN 213389545 U CN213389545 U CN 213389545U CN 202021412520 U CN202021412520 U CN 202021412520U CN 213389545 U CN213389545 U CN 213389545U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- foundation
- soft soil
- existing
- soil area
- 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.)
- Active
Links
Images
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model discloses a soft soil district newly builds foundation support structure of existing pipeline under road bed, the pipeline is laid in the ground, lay the pipeline ground that is used for supporting the pipeline below the pipeline, its foundation support implementation structure includes that follow-up a plurality of rubble mound of bearing pipeline ground below the pipeline ground is established, a plurality of rubble mound is arranged along the extending direction of pipeline, it has the interval to separate between the adjacent rubble mound, pour into in the rubble mound have the rubble that is arranged in condensing the rubble mound and be in the same place thick liquid, the road bed has been laid on the earth's surface of pipeline position. The utility model discloses can effectively strut existing pipeline, be applicable to projects such as ground processing, road engineering and pipeline engineering.
Description
Technical Field
The utility model relates to a ground is handled, road engineering and pipeline engineering, especially relates to a soft soil district newly builds foundation supporting construction of existing pipeline under the road bed.
Background
With the rapid development of urbanization, the problem of newly building a roadbed in an existing pipeline area is often encountered in actual engineering, and the problem in a soft soil area is particularly important to the safety of the existing pipeline and the roadbed. Soft soil has high natural moisture content, high compressibility, high natural void ratio, low bearing capacity, low strength, high sensitivity and low water permeability, is soft plastic, flows and moulds the state generally, includes: soft cohesive soil, mucky soil, silt, peat soil, peat and the like. The settlement control of the soft soil area has great significance for guaranteeing the stability and safety of the project.
However, it has been found by searching patent libraries and literature that the research on the treatment of existing pipelines under the newly constructed roadbed in soft soil areas is very insufficient. Aiming at the problem, the inventor provides a pipeline foundation implementation and supporting structure under the newly constructed road foundation of the soft soil area.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a foundation supporting construction of existing pipeline under the soft soil district new construction road bed is provided, it can effectively strut existing pipeline, is applicable to projects such as ground processing, road engineering and pipeline engineering.
Solve above-mentioned technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a soft soil district newly builds foundation support structure of existing pipeline under road bed, and the pipeline is laid in the ground, has laid the pipeline foundation that is used for supporting the pipeline below the pipeline, its characterized in that: the foundation support implementation structure comprises a plurality of follow-up gravel piers which are arranged below the pipeline foundation and used for supporting the pipeline foundation, the gravel piers are arranged along the extending direction of the pipeline, intervals are reserved between every two adjacent gravel piers, slurry which is used for condensing gravel in the gravel piers together is injected into the gravel piers, and a roadbed is arranged on the earth surface of the position of the pipeline.
Furthermore, the cross section of the stone pillar is trapezoidal.
Furthermore, a flexible pile composite foundation is arranged on the periphery of the pipeline and comprises a plurality of vertical flexible piles, and the flexible piles are inserted into the ground.
Furthermore, the foundation support implementing structure further comprises a gravel and slurry guiding device, the gravel and slurry guiding device comprises a guide pipe, a pushing plate movably arranged in the guide pipe and a pushing shaft fixedly connected with the pushing plate, the guide pipe is used for being inserted into the ground to guide gravel to the lower side of the pipeline foundation to form a gravel pier, the guide pipe is also used for subsequently guiding slurry to the gravel pier, the pushing plate is used for pushing gravel to the inner end of the guide pipe, the pushing shaft extends to the outer side of the guide pipe, and the pushing shaft is used for operating the pushing plate.
Furthermore, a plurality of air holes are formed in the pushing plate.
Furthermore, a closed openable pipe boot is arranged at the inner end of the conduit.
Furthermore, a sensor for feeding back the position information of the inner end of the catheter in real time is arranged at the inner end of the catheter.
Further, the distance between adjacent stone chippings is less than 8 m.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a garrulous stone mound that sets up after pipeline and pipeline ground can effectively ensure the stability of existing pipeline under the influence of new road bed of building in the deep soft soil layer, improves life.
2. The utility model discloses required material easily acquires, and the price economy can not increase extra burden.
3. The utility model discloses set up rubble and thick liquid gatherer, can make to implement the flow simple, the work progress is easy to operate.
4. The utility model discloses the suitability is wider, not only is applicable to strutting of existing pipeline, under the prerequisite that increases extra supporting measure, also is applicable to existing utility tunnel's strutting.
Drawings
Fig. 1 is a schematic cross-sectional view of a first embodiment of the present invention;
FIG. 2 is a schematic view showing the use of the crushed stone and slurry introducing device according to the first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a propulsion plate according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a grouting pipe penetrating into a catheter according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of the distribution of stone breaking piers according to the first embodiment of the present invention;
fig. 6 is a schematic diagram of a position relationship between a flexible pile penetrating through a position of a pipeline and an adjusted flexible pile according to a first embodiment of the present invention;
fig. 7 is a schematic view illustrating adjustment of an adjusted flexible pile according to a first embodiment of the present invention;
fig. 8 is a schematic cross-sectional view of a second embodiment of the present invention.
The reference numerals in the drawings mean:
1-a catheter; 2-a propulsion plate; 3-a propulsion shaft; 4-flexible piping; 5-a sand cushion layer; 6-breaking stone piers; 7-natural earth surface; 8-air holes; 9-grouting pipe; 10-flexible pile composite foundation; 11-flexible piles running through the pipe locations; 12-the adjusted flexible pile; 13-sidewalk; 14-a traffic lane; 15-a pavement structure layer; 16-gravel; 17-clearing the table line; 18-clay edge covering; 19-excavating a line; 20-rigid piping; 21-concrete support.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
The first embodiment is as follows:
the foundation support structure of the existing pipeline under the newly constructed road foundation in the soft soil area is shown in figure 1. The pipelines 4 and 20 are arranged in the ground, and pipeline foundations for supporting the pipelines are laid below the pipelines 4 and 20. The present embodiment illustrates two types of pipes, a flexible pipe 4 and a rigid pipe 20, the pipe foundation below the flexible pipe 4 is a sand cushion 5, and the pipe foundation below the rigid pipe 20 comprises a concrete support 21 below the rigid pipe 20 and the sand cushion 5 below the concrete support 21.
The foundation support implementation structure comprises a plurality of stone piers 6 which are arranged below the pipeline foundation to support the pipeline foundation in a follow-up mode, as shown in fig. 5 and 6, the stone piers 6 are arranged along the extending direction of the pipeline, intervals are formed between every two adjacent stone piers 6, and slurry used for condensing stone in the stone piers 6 is injected into the stone piers 6.
A plurality of vertical flexible pile composite foundations 10 are distributed on the peripheries of the pipelines 4 and 20, the flexible piles are inserted into the ground, the foundations are distributed on the ground surface of the positions of the pipelines, and the upper surfaces of the flexible pile composite foundations 10 are supported below the foundations.
The roadbed of the embodiment is a low-fill roadbed.
In order to add the gravel pier 6 on the basis of the existing pipeline and the pipeline foundation, the local foundation support implementation structure is provided with a gravel and slurry introducing device. As shown in fig. 2 to 4, the gravel and slurry guiding device comprises a guide pipe 1, a propelling plate 2 movably arranged in the guide pipe and a propelling shaft 3 fixedly connected with the propelling plate 2, when in use, the guide pipe 1 is inserted into the ground from a side edge at a certain angle, the inner end of the guide pipe 1 extends to the lower surface of the pipeline foundation, so that gravel can be guided to the lower surface of the pipeline foundation through the guide pipe 1 to form a gravel pier 6 and then slurry is guided to the gravel pier 6. In the process of leading in the gravel through the guide pipe 1, the gravel can be pushed to the inner end of the guide pipe 1 through the pushing plate 2 so as to be pressed into the ground, the pushing shaft 3 and the pushing plate 2 are fixedly welded, the pushing shaft 3 extends to the outer edge of the guide pipe 1, and a worker operates the pushing plate 2 through the pushing shaft 3 in the using process.
In the embodiment, the plurality of air holes 8 are formed in the propulsion plate 2, so that the pressure inside the propulsion plate 2 and the atmospheric pressure can be kept balanced in the process of propelling the propulsion plate 2, and the propulsion resistance is reduced.
Wherein, the inner end of the catheter 1 is provided with a closed openable and closable pipe boot and a sensor for feeding back the position information of the inner end of the catheter in real time.
The concrete work progress of the foundation support structure of the existing pipeline under the soft soil area newly-built road base of this embodiment is:
firstly, the positions of the existing pipelines 4 and 20 are determined according to the existing planning data, the areas where the existing pipelines 4 and 20 and the newly built roadbed are overlapped are determined according to the trends of the existing pipelines and the newly built roadbed, and corresponding foundation treatment is carried out in the overlapped areas. At the same time, the burial depth of the existing pipe 4, 20 should also be determined.
Before the construction of a newly built roadbed, the field is leveled and a machine is erected. As shown in figure 2, the guide pipe 1 is obliquely pushed into the soft soil layer, the diameter of the guide pipe 1 is preferably 20cm, the inclination angle is not preferably larger than 45 degrees, and the inner end of the guide pipe 1 can reach the bottom of the existing pipeline. When the pipe is pushed in, the inner end of the pipe 1 is provided with a closed openable pipe shoe, the cone angle of the pipe shoe is 60 degrees, a sensor is arranged at the pipe shoe, and the position information of the inner end of the pipe 1 is fed back in real time. The inner end of the pipe 1 should be located below the sand bed 5 below the pipe and not damage the sand bed 5.
After reaching the corresponding position, the pipe boot is opened, and gravels are poured into the conduit 1, wherein the maximum diameter of the gravels is not more than 10 cm. Besides the broken stone, the building waste can also be used for crushing and preparing. The pushing plate 2 is pushed into the guide pipe 1, axial force is applied to the pushing shaft 3, and broken stones are gradually pressed into a soft soil layer below the sand cushion 5 to form a broken stone pier 6. The width of the gravel pier 6 is slightly larger than the width of the sand cushion, and the thickness of the gravel pier 6 is slightly larger than the thickness of the sand cushion and is in a trapezoidal shape. The operations can be carried out by the gravel and slurry introducing device at the same time on both sides of the existing pipeline, and can also be carried out side by side.
After the construction of the gravel pier 6 is completed, the propulsion shaft 3 and the propulsion plate 2 are removed, as shown in fig. 4, an external grouting pipe 9 is penetrated into the guide pipe 1, and slurry is pumped to the gravel pier 6, so that the cohesiveness and stability of the gravel pier 6 are improved, and the safety of the existing pipeline is guaranteed. The broken stone piers are uniformly arranged along the direction of the existing pipeline, and the distance between the broken stone piers is not more than 8 m. The broken stone pier improves the foundation bearing capacity of a soft soil layer and reduces the additional stress transmitted to the bottom of the broken stone pier 6. The broken stone piers 6 distributed at intervals can play a good supporting role when a roadbed is newly built, and the construction cost can be reduced.
And determining a soft foundation treatment scheme of the roadbed according to the height of the newly built roadbed and the soft soil survey data. Taking the flexible pile composite foundation 10 as an example, after determining parameters such as pile length, pile diameter and pile spacing of the flexible piles, determining the position of the existing pipeline penetrating through the flexible piles according to a flexible pile plane layout diagram and the trend of the existing pipeline. The flexible piles 11 penetrating the position of the pipeline can damage the existing pipeline, so the arrangement of the flexible piles should be adjusted or changed according to the penetrating position, as shown in fig. 7, two adjusted flexible piles 12 are respectively arranged on two sides of the existing pipeline at the penetrating position, and encryption is carried out according to the actual situation, or parameters such as the pile length, the pile diameter, the pile spacing and the like of the adjusted flexible piles 12 are calculated. And carrying out design feedback on the adjusted flexible pile composite foundation plane layout drawing, and guiding subsequent construction.
And constructing according to the adjusted flexible pile composite foundation design drawing. In the construction process, the construction machine is prevented from being arranged at the top of the existing pipeline, and the disturbance of construction on the existing pipeline is reduced as much as possible.
And determining the types of the low-fill roadbed and the shallow excavation roadbed according to the actual engineering condition of the newly built roadbed. The miscellaneous fill of the natural earth's surface 7 is cleared and excavated according to the bed elevation, as shown by excavation line 19 and surface cleaning line 17 in fig. 1. And backfilling gravel 16 after excavation, gradually paving facilities such as a pavement structure layer 15 and a sidewalk 13, arranging clay covered edges 18 on the side edges of the sidewalk 13, and arranging a traffic lane 14 on the pavement structure layer 15.
Example two:
fig. 8 shows a foundation support structure of existing pipelines under a newly constructed road bed in a soft soil area according to the second embodiment, which is different from the first embodiment in that the road bed of the present embodiment is a shallow excavation road bed.
The utility model is suitable for an in deep and thick soft soil layer, still can play certain effect to the existing utility tunnel in soft soil district, nevertheless should increase extra, especially the measure of strutting of piping lane bottom according to actual conditions.
The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.
Claims (8)
1. The utility model provides a soft soil district newly builds foundation support structure of existing pipeline under the road bed, the pipeline is laid in the ground the pipeline foundation who is used for the support the pipeline has been laid below the pipeline, its characterized in that: foundation support implements the structure and includes that the follow-up establishment is in support below the pipeline foundation a plurality of rubble mound, a plurality of rubble mound is followed the extending direction of pipeline arranges, and is adjacent it has the interval to separate between the rubble mound, it is used for with to pour into in the rubble mound be the thick liquid that rubble in the rubble mound condenses together, laid on the earth's surface of pipeline position the road bed.
2. The foundation support structure of existing pipelines under a new road foundation in a soft soil area according to claim 1, characterized in that: the cross section of the stone pillar is trapezoidal.
3. The foundation support structure of existing pipelines under a new road foundation in a soft soil area according to claim 1, characterized in that: the periphery of the pipeline is provided with a flexible pile composite foundation, the flexible pile composite foundation comprises a plurality of vertical flexible piles, and the flexible piles are inserted into the ground.
4. The foundation support structure of existing pipelines under a new road foundation in a soft soil area according to claim 1, characterized in that: the foundation support implementing structure further comprises a broken stone and slurry guiding device, the broken stone and slurry guiding device comprises a guide pipe, a pushing plate movably arranged in the guide pipe and a pushing shaft fixedly connected with the pushing plate, the guide pipe is used for being inserted into the ground to guide broken stones to the lower surface of the pipeline foundation to form the broken stone pier, the guide pipe is further used for subsequently guiding slurry to the broken stone pier, the pushing plate is used for pushing the broken stones to the inner end of the guide pipe, the pushing shaft extends to the outer side of the guide pipe, and the pushing shaft is used for operating the pushing plate.
5. The foundation support structure of the existing pipeline under the new road foundation in the soft soil area according to claim 4, characterized in that: the propulsion plate is provided with a plurality of air holes.
6. The foundation support structure of the existing pipeline under the new road foundation in the soft soil area according to claim 4, characterized in that: the inner end of the conduit is provided with a closed openable pipe boot.
7. The foundation support structure of the existing pipeline under the new road foundation of the soft soil area according to any one of claims 4 to 6, characterized in that: and a sensor for feeding back the position information of the inner end of the catheter in real time is arranged at the inner end of the catheter.
8. The foundation support structure of existing pipelines under a new road foundation in a soft soil area according to claim 1, characterized in that: and the distance between adjacent stone breaking piers is less than 8 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021412520.0U CN213389545U (en) | 2020-07-16 | 2020-07-16 | Foundation supporting structure of existing pipeline under soft soil area newly-built road bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021412520.0U CN213389545U (en) | 2020-07-16 | 2020-07-16 | Foundation supporting structure of existing pipeline under soft soil area newly-built road bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213389545U true CN213389545U (en) | 2021-06-08 |
Family
ID=76200608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021412520.0U Active CN213389545U (en) | 2020-07-16 | 2020-07-16 | Foundation supporting structure of existing pipeline under soft soil area newly-built road bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213389545U (en) |
-
2020
- 2020-07-16 CN CN202021412520.0U patent/CN213389545U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106759473B (en) | The constructing structure and its construction method of underground pipe gallery and road | |
| CN103590425B (en) | A kind of Peaty soft soil stratum subway station construction technology | |
| CN106703050A (en) | Expansive soil road cutting side slope reinforced soil back-pressure seepage-preventive supporting structure and construction method thereof | |
| CN102691300B (en) | Construction method of foundation pit earthwork | |
| CN110306616A (en) | A kind of construction method of sewage conduct | |
| CN108166518B (en) | Structure for synchronous treatment of underground pipeline foundation pit and soft soil foundation and reinforcing method thereof | |
| CN105696427A (en) | Construction method for reinforcing newly-built railway karst foundation and roadbed structure thereof | |
| CN108412016A (en) | Underground tube body assures construction method | |
| CN110219359A (en) | A kind of Submersed type inspection well and its construction method | |
| CN108571000A (en) | The construction method of underground water cutting when wearing existing railway under a kind of road of location along the river | |
| CN106948340A (en) | A kind of construction method of the Manual excavated pile structure of high polymer grouting protection | |
| CN113445396A (en) | High-fill road foundation filling construction method for high liquid limit soil road section | |
| CN115288162A (en) | Reinforcing method for soft soil foundation fill slope | |
| CN109235474B (en) | Structure of super-large cofferdam based on marine environment and construction process thereof | |
| CN213389545U (en) | Foundation supporting structure of existing pipeline under soft soil area newly-built road bed | |
| CN208293588U (en) | A kind of Cut Slopes of Expansive Soil reinforcement formula, which is changed, fills out compages | |
| CN206220108U (en) | Cut Slopes of Expansive Soil reinforced earth back-pressure antiseepage supporting construction | |
| AU2021102288A4 (en) | Composite Replacement Structure and Treatment for Soft Base of Coastal Mudflat | |
| CN205576638U (en) | Consolidate roadbed structure who handles newly -built railway karst foundation | |
| CN111042144B (en) | Excavation method for foundation pit of underground beam under condition of continuous flow of riverway in cold region | |
| CN108316077A (en) | One kind underlies shallow embedding cave dwelling roadbed treatment structures and method | |
| CN114109394A (en) | Method for determining pile length of tunnel shallow-buried weak surrounding rock high-pressure jet grouting pile method ground surface reinforcement | |
| CN106337409A (en) | Method for treating peat soil foundation through preloading in combination with salt piles | |
| CN112878403A (en) | Pipeline laying method | |
| CN207878494U (en) | The structure of underground utilities foundation pit and soft soil foundation synchronization process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No.146, huangbian North Road, Baiyun District, Guangzhou, Guangdong 510440 Patentee after: Guangdong transportation planning and Design Institute Group Co.,Ltd. Address before: No.22 Xinghua Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG PROVINCE COMMUNICATIONS PLANNING & DESIGN INSTITUTE Co.,Ltd. |
|
| CP03 | Change of name, title or address |