CN111997030B - Soft soil reinforcing and curing method - Google Patents
Soft soil reinforcing and curing method Download PDFInfo
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- CN111997030B CN111997030B CN202010802803.4A CN202010802803A CN111997030B CN 111997030 B CN111997030 B CN 111997030B CN 202010802803 A CN202010802803 A CN 202010802803A CN 111997030 B CN111997030 B CN 111997030B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The application relates to a soft soil reinforcing and curing method, which relates to the technical field of soft foundation construction and comprises the following steps: s1, arranging a drainage ditch; s2, reinforcing the drainage ditch in a stepped manner; s3, paving a substrate reinforcing net on the side edge of the drainage ditch, and installing a plurality of strong drainage pipes; and S4, pressing the first rubble. Divide the ladder solidification slope in order to reduce the whole degree of difficulty that strengthens the solidification together of slope, then the moisture of strong drain pipe in the in-process soft soil foundation that follows the basement reinforcing net and constantly impress soft soil foundation is discharged in order to realize the reinforcing to the ground through strong drain pipe, and all strong drain pipes pass the position skew of middle part reinforcing net and the easy restriction strong drain pipe of top reinforcing net simultaneously, first rubble and second rubble distribute the position skew of first rubble and second rubble when impressing the soft soil foundation in order to reduce relatively at the side of all strong drain pipes, therefore, make this application utensil can reduce the position skew of strong drain pipe and rubble when consolidating the soft soil foundation.
Description
Technical Field
The application relates to the technical field of soft foundation construction, in particular to a soft soil reinforcing and curing method.
Background
Soft soil foundations are foundations formed from silt, mucky soil, miscellaneous fill, landfill, or other highly compressive soil layers. Soft foundations are very poor in stability, low in strength, high in compressibility, easy to liquefy, and large in sedimentation amount. In the related art, the reinforcing and curing are usually carried out by pressing rubble into the mold.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: especially, when process engineering construction is carried out at the position of an inclined soft ground base such as a slope, the position of the foundation is easy to shift by soft soil due to the influence of factors such as the inclination of the surface layer of the soil, and the like, so that the position of rubble pressed in the soft soil is driven to shift, and the construction is difficult.
Disclosure of Invention
In order to reduce the position deviation of rubble in the construction process, the application aims to provide a soft soil reinforcing and curing method.
The soft soil reinforcing and curing method provided by the application adopts the following technical scheme:
a soft soil reinforcing and curing method comprises the following steps:
s1, arranging a drainage ditch along the inclined direction of the soft soil foundation;
s2, reinforcing the soft soil foundation step by step along the extending direction of the drainage ditch, firstly reinforcing one step at one end of the drainage ditch, and then reinforcing step by step towards the direction close to the other end of the drainage ditch;
s3, reinforcing corresponding steps needing to be reinforced, paving a base reinforcing net on the side edge of the drainage ditch, installing a plurality of strong drainage pipes on the side edge of the base reinforcing net close to one side of the drainage ditch, pressing the base reinforcing net into a soft soil foundation, and embedding the strong drainage pipes into the soft soil foundation along with the base reinforcing net;
s4, pressing the first rubble so that the first rubble forms a substrate rubble layer on the substrate reinforcing net, and pressing the first rubble downwards to push the substrate reinforcing net to continue to be pressed into the soft soil foundation;
s5, pressing the reinforcing net in the middle, wherein all the strong drainage pipes penetrate through the reinforcing net in the middle;
s6, pressing the second rubble so that the second rubble forms a middle rubble layer on the middle reinforcing net;
and S7, pressing in the top reinforcing net, and enabling all strong drainage pipes to penetrate through the top reinforcing net.
Through adopting above-mentioned technical scheme, the degree of difficulty that the solidification is strengthened together in order to reduce the slope wholly in step solidification slope, then the moisture of strong blow off pipe in the in-process soft soil foundation that constantly impresses soft soil foundation following the basement reinforcing net discharges in order to realize the reinforcing to the foundation through strong blow off pipe, and all strong blow off pipes pass the position skew of middle part reinforcing net and top reinforcing net easy restriction strong blow off pipe simultaneously, first rubble and second rubble distribute in the position skew of the first rubble of all strong blow off pipe with the relative reduction first rubble and second rubble when impressing soft soil foundation, therefore, make this soft soil reinforcing solidification method can reduce the position skew of strong blow off pipe and rubble when consolidating soft soil foundation.
Preferably, the quantity of escape canal is at least two, and all escape canals distribute along the extending direction of soft soil foundation, the extending direction of soft soil foundation with the incline direction of escape canal is perpendicular or crossing, and every escape canal side sets up in a supporting manner the strong drain pipe.
Through adopting above-mentioned technical scheme, a plurality of escape canals all are supporting to be equipped with strong drain pipe so that all strong drain pipes can be comparatively even dispersion in basement rubble layer and middle part rubble layer to make this weak soil reinforcing solidification method when increasing strong drain pipe's drainage effect, further reduce the position skew of first rubble and second rubble when the soft soil foundation of impressing.
Preferably, the upper end of the strong drainage pipe is detachably provided with a water guide pipe, and the end part of the water guide pipe extends into the corresponding drainage ditch.
Through adopting above-mentioned technical scheme, the strong drain pipe can the drainage water at the in-process that impresses soft soil foundation, and this part of water is in the escape canal through the water pipe guide entering to reduce this part of water and permeate back to in the soft soil foundation through soft soil foundation surface.
Preferably, steps S5 and S6 are repeated at least once before step S7.
Through adopting above-mentioned technical scheme, increase the quantity of middle part reinforcing net and in order to carry out the multiple spot to strong drain pipe and fix to improve the stability of strong drain pipe position, with the offset of further first rubble and the second rubble at the soft soil foundation in-process of impressing.
Preferably, after step S7, a surface reinforcing mesh is laid on the top reinforcing mesh, the surface reinforcing mesh is disposed in an inclined manner, the inclined direction of the surface reinforcing mesh is the same as the inclined direction of the soft soil foundation, and crushed stone is filled between the surface reinforcing mesh and the top reinforcing mesh to form a crushed stone layer.
Through adopting above-mentioned technical scheme, the soft soil foundation layer through base rubble layer and middle part rubble layer is the echelonment setting, and the rubble layer forms the slope under the effect of top layer reinforcing net to form slope with smooth transition between two adjacent ladders.
Preferably, a concrete sealing layer is poured on the surface reinforcing mesh.
Through adopting above-mentioned technical scheme, the rubble layer is sealed in order to avoid the rubble to roll and drop in the concrete seal to improve the stability of soft soil foundation increase after the solidification.
Preferably, the opening of the drainage ditch is provided with a plurality of water passing pieces along the extending direction of the drainage ditch, and the adjacent two water passing pieces are sealed.
Through adopting above-mentioned technical scheme, the escape canal seals the back, and water only discharges into the escape canal through crossing water spare to make the escape canal when keeping the drainage function, can make the soft soil foundation surfacing behind the concreting seal.
Preferably, an edge fence is arranged around the edge of the middle reinforcing net, and the middle rough stone layer is located in the edge fence.
Through adopting above-mentioned technical scheme, the displacement of second rubble on middle part reinforcing net is reduced to edge rail to reduce the holistic displacement of middle part rubble layer at the soft soil foundation in-process of impressing relatively.
Preferably, a plurality of sleeves are fixedly arranged on the middle reinforcing net, and the forced drainage pipe penetrates through the corresponding sleeves.
Through adopting above-mentioned technical scheme, strong outlet pipe and second rubble are separated in order to reduce the extrusion damage of the intraformational second rubble of middle part rubble to strong outlet pipe to anti extrusion.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the slope is solidified in a stepped mode to reduce the difficulty of integrally strengthening and solidifying the slope, then, water in the soft soil foundation is discharged through the strong drainage pipes in the process that the strong drainage pipes are continuously pressed into the soft soil foundation along with the base reinforcing net to achieve strengthening and solidifying of the foundation, all the strong drainage pipes penetrate through the middle reinforcing net and the top reinforcing net simultaneously to easily limit the position deviation of the strong drainage pipes, the first rubble and the second rubble are distributed on the side edges of all the strong drainage pipes to relatively reduce the position deviation of the first rubble and the second rubble when the first rubble and the second rubble are pressed into the soft soil foundation, and therefore the soft soil strengthening and solidifying method can reduce the position deviation of the strong drainage pipes and the rubble when the soft soil foundation is strengthened;
2. the strong drainage pipes are matched with the drainage ditches, so that all the strong drainage pipes can be uniformly dispersed in the base rubble layer and the middle rubble layer, and the position deviation of the first rubble and the second rubble when being pressed into the soft soil foundation is further reduced while the drainage effect of the strong drainage pipes is improved by the soft soil reinforcing and curing method;
3. the soft soil foundation layer passing through the base rubble layer and the middle rubble layer is arranged in a step shape, and the rubble layer forms an inclined slope under the action of the surface layer reinforcing net, so that the slope is formed between every two adjacent steps to achieve smooth transition.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present application during construction;
FIG. 2 is a schematic cross-sectional structural view of an embodiment of the present application;
fig. 3 is a schematic structural diagram after construction according to the embodiment of the present application.
In the figure, 0, drainage ditch; 01. a water passing part; 1. a strong drainage pipe; 11. a water conduit; 2. a base reinforcing mesh; 3. a base matte layer; 4. a middle reinforcing net; 41. a sleeve; 42. a peripheral rail; 5. a middle coarse stone layer; 6. a top reinforcing mesh; 7. a crushed stone layer; 8. a surface layer reinforcing net; 9. and (5) concrete sealing layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses soft foundation reinforced structure in slope is applicable to the reinforcing of the soft soil foundation in slope position and consolidates, and the slope of soft soil foundation is so that it has incline direction and extending direction, and the incline direction and the extending direction of soft soil foundation are perpendicular or crossing.
Referring to fig. 1, a reinforcement structure of a slope soft foundation includes a drainage ditch 0 and a plurality of reinforcement members arranged in stages along an extending direction of the drainage ditch 0. The extending direction of the drainage ditch 0 is the same as the inclined direction of the slope, the number of the drainage ditches 0 is at least two, and all the drainage ditches 0 are distributed at intervals along the extending direction of the soft soil foundation. All be provided with a plurality of between every two adjacent escape canals 0 and consolidate the subassembly, all consolidate the subassembly and be the echelonment and distribute between two adjacent escape canals 0.
Referring to fig. 2, the reinforcing assembly includes a base reinforcing mesh 2, a base rough stone layer 3, a middle reinforcing part, and a top reinforcing mesh 6, which are sequentially disposed from bottom to top. The middle reinforcing part comprises a middle reinforcing net 4 and a middle rough stone layer 5 which are arranged from bottom to top, the number of the middle reinforcing parts is at least two, and all the middle reinforcing parts are sequentially arranged along the vertical direction. In this embodiment, the base rough stone layer 3 is filled with first rough stones, and the middle rough stone layer 5 is filled with second rough stones, and the size of the first rough stones is larger than that of the second rough stones. The base reinforcing net 2, the middle reinforcing net 4 and the top reinforcing net 6 are all formed by fixedly connecting a plurality of steel pipes. In order to further reduce the displacement of the second rubble, the edges of the central reinforcing mesh 4 are surrounded by edge fences 42, the central rubble layer 5 is located in the edge fences 42, and the edge fences 42 are used for blocking the second rubble on the central reinforcing mesh 4 from separating from the corresponding central reinforcing mesh 4.
With continued reference to fig. 2, in order to facilitate drainage during installation of the reinforcing assembly, a plurality of pipe sets are disposed on two sides of the base reinforcing mesh 2 near the two drainage ditches 0, each pipe set includes a plurality of strong drainage pipes 1, and the lower ends of all the strong drainage pipes 1 are fixed on the base reinforcing mesh 2. All strong drain pipe 1's axis all sets up along vertical direction, and all strong drain pipe 1 in the same group nest of tubes are along the extending direction interval distribution of escape canal 0. All the strong drain pipes 1 pass through all the middle reinforcing nets 4 at the same time. In this embodiment, the strong drainage pipe 1 includes a plurality of pipe sections spliced in the vertical direction, and two adjacent pipe sections are detachably connected. Specifically, the outer wall surface of one end of the pipe section is provided with an external thread section. The inner wall of the other end of the pipe section is provided with an internal thread section for the external thread section of the adjacent pipe section to be in threaded connection.
With reference to fig. 2, in order to reduce the extrusion damage of the strong drainage pipes 1 caused by the second rubble, each middle reinforcing net 4 is provided with a plurality of sleeves 41, and the number of the sleeves 41 is greater than or equal to that of the strong drainage pipes 1, so as to ensure that each strong drainage pipe 1 is protected by the corresponding sleeve 41. The axis of the sleeve 41 is arranged in the vertical direction, the upper end of the sleeve 41 extends into the middle bristle layer 5, and the lower end of the sleeve 41 passes downwards through the middle reinforcing mesh 4. Between two middle reinforced parts adjacent up and down, the upper end of the sleeve 41 positioned below is clamped with the lower end of the sleeve 41 positioned above.
Referring to fig. 1 and 2, in order to facilitate the water in the soft soil foundation to be discharged in the installation process of the reinforcing component, the upper end of the strong water drainage pipe 1 is detachably provided with a water guide pipe 11, and the water guide pipe 11 penetrates out of the top reinforcing net 6. When the strong drainage pipe 1 is continuously embedded into the soft soil foundation along with the substrate reinforcing net 2, water in the soft soil foundation is discharged through the strong drainage pipe 1, flows into the drainage ditch 0 under the guidance of the water guide pipe 11, and is finally discharged through the drainage ditch 0 in a unified manner. After the top reinforcing net 6 is installed, the water guide pipe 11 at the end of the strong drainage pipe 1 is removed.
Referring to fig. 2 and 3, after all the top reinforcing nets 6 are installed, in order to change the stepped shape of the soft soil foundation into a slope shape with smooth transition, the top reinforcing nets 6 are provided with surface reinforcing nets 8, and the surface reinforcing nets 8 are formed by fixedly connecting a plurality of steel pipes. The surface layer reinforcing mesh 8 is obliquely arranged, and the inclination direction of the surface layer reinforcing mesh 8 is the same as the inclination direction of the soft soil foundation. In order to facilitate the fixation of the surface reinforcing net 8, between the reinforcing components of two adjacent steps, two groups of reinforcing components are divided into a high-order reinforcing component and a low-order reinforcing component, one end of the surface reinforcing net 8 of the low-order reinforcing component is fixedly connected with the top reinforcing net 6 of the low-order reinforcing component, and the other end of the surface reinforcing net 8 of the low-order reinforcing component is fixedly connected with the top reinforcing net 6 of the high-order reinforcing component. Correspondingly, a gravel layer 7 is arranged between the surface layer reinforcing mesh 8 and the top reinforcing mesh 6. The gravel layer 7 is formed by filling a plurality of gravel, and the size of the gravel is smaller than that of the second rubble.
Concrete sealing layers 9 are poured on the surface layer reinforcing nets 8, the concrete sealing layers 9 are formed by pouring and condensing concrete, and the concrete sealing layers 9 seal the opening end faces of the drainage ditches 0 while sealing the upper surfaces of all the surface layer reinforcing nets 8. In order to facilitate subsequent drainage of a soft soil foundation, the opening of the drainage ditch 0 is provided with a plurality of water passing pieces 01 along the extending direction of the opening, the water passing pieces 01 are inspection well covers or filter grid plates, and the opening between every two adjacent water passing pieces 01 is sealed by a concrete sealing layer 9.
The soft soil reinforcing and curing method implemented by applying the structure comprises the following steps:
s1, arranging a plurality of drainage ditches 0 on the soft soil foundation, arranging a single drainage ditch 0 along the inclined direction of the soft soil foundation, and distributing all the drainage ditches 0 along the extending direction of the soft soil foundation at intervals.
And S2, reinforcing the soft soil foundation step by step along the extension direction of the drainage ditch 0, firstly reinforcing one end of the drainage ditch 0, and then reinforcing the soft soil foundation step by step towards the direction close to the other end of the drainage ditch 0.
S3, reinforcing corresponding steps needing to be reinforced, paving a base reinforcing net 2 on the side edge of the drainage ditch 0, installing a plurality of strong drainage pipes 1 on the side edge of the base reinforcing net 2 close to one side of the drainage ditch 0, pressing the base reinforcing net 2 into a soft soil foundation, embedding the strong drainage pipes 1 into the soft soil foundation along with the base reinforcing net 2, installing water guide pipes 11 at the upper ends of the strong drainage pipes 1, and extending the end parts of the water guide pipes 11 into the corresponding drainage ditches 0.
And S4, pressing the first rubble so that the first rubble forms a substrate rubble layer 3 on the substrate reinforcing net 2, and pressing the first rubble downwards to push the substrate reinforcing net 2 to continue to be pressed into the soft soil foundation.
And S5, pressing the middle reinforcing net 4, and enabling all the strong drainage pipes 1 to penetrate through the corresponding sleeves 41 on the middle reinforcing net 4.
S6, pressing the second rubble so that the second rubble forms a central rubble layer 5 on the central reinforcing mesh 4.
And S7, repeating the step S5 and the step S6 at least once according to the required pressing depth.
And S8, pressing the top reinforcing net 6, penetrating all the strong drainage pipes 1 through the top reinforcing net 6, and then detaching the water guide pipes 11 on the strong drainage pipes 1.
And S9, repeating the steps S3 to S8 until all the steps needing reinforcement are achieved.
S10, filling gravel on the top reinforcing nets 6 on all steps to form a gravel reinforcing layer, and installing the surface reinforcing net 8 to fixedly connect the surface reinforcing net 8 with the top reinforcing net 6 on another adjacent higher step.
S11, pouring concrete to form a concrete sealing layer 9 on all the surface reinforcing nets 8.
The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A soft soil reinforcing and curing method is characterized by comprising the following steps:
s1, arranging a drainage ditch (0) along the inclined direction of the soft soil foundation;
s2, reinforcing the soft soil foundation step by step along the extension direction of the drainage ditch (0), firstly reinforcing one step of one end of the drainage ditch (0), and then reinforcing step by step towards the direction close to the other end of the drainage ditch (0);
s3, for the ladder needing to be reinforced, paving a base reinforcing net (2) on the side edge of a drainage ditch (0), installing a plurality of strong drainage pipes (1) on the side edge of the base reinforcing net (2) close to one side of the drainage ditch (0), pressing the base reinforcing net (2) into a soft soil foundation, and embedding the strong drainage pipes (1) into the soft soil foundation along with the base reinforcing net (2);
s4, pressing the first rubbles so that the first rubbles form a substrate rubble layer (3) on the substrate reinforcing net (2), and pressing the first rubbles downwards to push the substrate reinforcing net (2) to be continuously pressed into the soft soil foundation;
s5, pressing the reinforcing net (4) in the middle, wherein all the strong drainage pipes (1) penetrate through the reinforcing net (4) in the middle;
s6, pressing the second rubble so that the second rubble forms a middle rubble layer (5) on the middle reinforcing net (4);
s7, pressing in the top reinforcing net (6), and enabling all the strong drainage pipes (1) to penetrate through the top reinforcing net (6).
2. A soft soil reinforcement solidification method according to claim 1, wherein the number of the drainage ditches (0) is at least two, all the drainage ditches (0) are distributed along an extending direction of the soft soil foundation, the extending direction of the soft soil foundation intersects with an inclined direction of the drainage ditches (0), and the strong drainage pipe (1) is arranged on the side edge of each drainage ditch (0) in a matching way.
3. A soft soil reinforcing and solidifying method according to claim 1, characterized in that the upper end of the strong drainage pipe (1) is detachably provided with a water guide pipe (11), and the end part of the water guide pipe (11) extends into the corresponding drainage ditch (0).
4. A soft soil reinforcement solidification method as claimed in claim 1, wherein steps S5 and S6 are repeated at least once before step S7.
5. A soft soil reinforcing and curing method according to claim 1, wherein after step S7, a surface reinforcing net (8) is laid on the top reinforcing net (6), the surface reinforcing net (8) is arranged obliquely, the direction of the inclination of the surface reinforcing net (8) is the same as the direction of the inclination of the soft soil foundation, and crushed stone is filled between the surface reinforcing net (8) and the top reinforcing net (6) to form a crushed stone layer (7).
6. A soft soil reinforcement and cure method according to claim 5, characterized in that a concrete sealing layer (9) is poured on the surface reinforcing net (8).
7. A soft soil reinforcing and solidifying method according to claim 6, characterized in that the opening of the drainage ditch (0) is provided with a plurality of water passing members (01) along the extending direction, and the adjacent two water passing members (01) are closed.
8. A soft soil reinforcement and cure method according to claim 1, characterized in that the edges of the central reinforcing mesh (4) are surrounded by edge fences (42), and the central rubble layer (5) is located in the edge fences (42).
9. A soft soil reinforcement and solidification method according to claim 1, characterized in that a plurality of sleeves (41) are fixedly arranged on the middle reinforcing net (4), and the strong drainage pipes (1) penetrate through the corresponding sleeves (41).
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| CN202010802803.4A CN111997030B (en) | 2020-08-11 | 2020-08-11 | Soft soil reinforcing and curing method |
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| CN202010802803.4A CN111997030B (en) | 2020-08-11 | 2020-08-11 | Soft soil reinforcing and curing method |
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| CN111997030B true CN111997030B (en) | 2021-08-10 |
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| KR100659926B1 (en) * | 2004-09-18 | 2006-12-21 | 재 술 나 | The stairway the stabilization reinforcement infrastructure which when it buys |
| CN106703043A (en) * | 2017-01-10 | 2017-05-24 | 深圳市基础工程有限公司 | Soft soil foundation pit construction method by using dynamic compaction block stone displacement instead of supporting |
| CN107604896B (en) * | 2017-09-22 | 2020-06-16 | 广州市沛基工程材料有限公司 | Soft soil foundation reinforcement treatment catchment strong drainage pipe structure |
| CN207944450U (en) * | 2018-01-27 | 2018-10-09 | 广州中体体育场馆工程有限公司 | soft foundation reinforcing structure |
| CN109024529B (en) * | 2018-07-16 | 2020-07-31 | 广州庆合体育设施工程有限责任公司 | Construction method of soft foundation reinforcing structure |
| CN210151702U (en) * | 2019-02-18 | 2020-03-17 | 长沙理工大学 | Soft foundation reinforcing structure |
| CN209602890U (en) * | 2019-02-26 | 2019-11-08 | 汇壹(上海)环境岩土科技有限公司 | A kind of topsoil is cured in situ and grid joint reinforcement soft soil foundation structure |
| CN210458823U (en) * | 2019-06-13 | 2020-05-05 | 中冶华成(武汉)工程有限公司 | Prevent subsiding bridgehead slope structure |
| CN111119205A (en) * | 2019-12-31 | 2020-05-08 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Gabion shoulder pad |
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