CN113216134B - Construction method for reinforcing soft soil foundation - Google Patents
Construction method for reinforcing soft soil foundation Download PDFInfo
- Publication number
- CN113216134B CN113216134B CN202110513745.8A CN202110513745A CN113216134B CN 113216134 B CN113216134 B CN 113216134B CN 202110513745 A CN202110513745 A CN 202110513745A CN 113216134 B CN113216134 B CN 113216134B
- Authority
- CN
- China
- Prior art keywords
- sealing
- steel sheet
- sheet pile
- water
- main pipe
- 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
Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
- E02D5/06—Fitted piles or other elements specially adapted for closing gaps between two sheet piles or between two walls of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
- E02D5/08—Locking forms; Edge joints; Pile crossings; Branch pieces
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The application discloses a construction method for reinforcing a soft soil foundation, which comprises the following steps: s1, measuring and setting out; s2, inserting and driving steel sheet piles, and splicing the steel sheet piles to form an annular sealing wall; s3, inserting plastic drainage plates, and inserting a plurality of plastic drainage plates in the area surrounded by the sealing wall; s4, paving a sand cushion layer, wherein in the paving process of the sand cushion layer, a layer of sand cushion layer is paved, then a plurality of filter pipes are paved on the sand cushion layer, then a main pipe is installed, the plurality of filter pipes are communicated through the main pipe, and then sand is filled and paved, so that the sand cushion layer is higher than the upper end surfaces of the filter pipes and the main pipe; s5, laying a sealing film, laying the sealing film on the upper end face of the region enclosed by the sealing wall to realize sealing, and penetrating the main pipe out of the sealing film; s6, vacuumizing, wherein the main pipe penetrates out of the sealing film to be connected to a vacuumizing device, and vacuumizing is performed through the vacuumizing device; and S7, vacuum unloading. Through the sealed wall that the concatenation of steel sheet pile enclosed, the sealed effect of steel sheet pile is better to make the solidification effect of soft soil foundation better.
Description
Technical Field
The application relates to the technical field of road construction, in particular to a construction method for reinforcing a soft soil foundation.
Background
In order to prevent the foundation from sinking and pulling to crack to cause the damage of the soft foundation, the soft foundation needs to be treated in advance to be firm enough.
The soft soil foundation with large water content is usually subjected to vacuum combined preloading treatment, and the soft foundation is sealed by a sealing wall within the reinforcing range. When the sealing wall is formed, a cement soil mixing pile is adopted in the traditional method.
However, due to the water seepage condition of the cement-soil mixing pile, the sealing effect of the method is insufficient in a water-rich soft soil area, and the curing effect of a soft soil foundation is influenced in the vacuumizing operation process, so that improvement is needed.
Disclosure of Invention
In order to solve the problem that the curing of the soft soil foundation is influenced due to the poor sealing effect of the sealing wall, the application provides a construction method for reinforcing the soft soil foundation.
The application provides a construction method for soft soil foundation reinforcement, which adopts the following technical scheme:
a construction method for reinforcing a soft soil foundation comprises the following steps:
s1, measuring and setting out;
s2, inserting and driving steel sheet piles, and splicing the steel sheet piles to form an annular sealing wall;
s3, inserting plastic drainage plates, and inserting a plurality of plastic drainage plates in the area surrounded by the sealing wall;
s4, paving a sand layer, namely paving a sand layer, paving a plurality of filter pipes on the sand layer in the paving process of the sand layer, installing a main pipe, communicating the filter pipes through the main pipe, and filling and paving sand so that the sand layer is higher than the upper end surfaces of the filter pipes and the main pipe;
s5, laying a sealing film, laying the sealing film on the upper end surface of the region surrounded by the sealing wall to realize sealing, and penetrating the main pipe out of the sealing film;
s6, vacuumizing, wherein the main pipe penetrates out of the sealing film to be connected to a vacuumizing device, and vacuumizing is performed through the vacuumizing device;
and S7, vacuum unloading.
Through above-mentioned technical scheme, among the evacuation process, the sand bedding on upper portion is arranged by the plastics drain bar to the space water in the soft soil foundation, then discharges away through chimney filter and main pipe, reduces the water content in the soft soil foundation. In addition, the sealing wall formed by splicing and enclosing the steel sheet piles has a better sealing effect, so that the condition of water permeation of an external area is reduced in a water-rich soft soil area, and the curing effect of a soft soil foundation is better.
Optionally, the steel sheet pile used in S2 has a structure including a steel sheet pile body and fastening portions disposed at both ends in the width direction, each fastening portion has a fastening groove, and when the steel sheet piles are spliced, a side wall of the fastening groove of one steel sheet pile, which is away from the steel sheet pile body, is used for embedding a fastening groove of another steel sheet pile to realize splicing;
the inside wall that the steel sheet pile body was kept away from to the catching groove still is equipped with water inflation sealing rod, water inflation sealing rod extends along the length direction of steel sheet pile body.
Through above-mentioned technical scheme, set up and meet water inflation sealing rod, when the mutual lock joint of steel sheet pile formed the sealed wall, further support tight catching groove inner wall after meeting water inflation sealing rod and meeting water inflation for the leakproofness of the concatenation seam between the steel sheet pile is better, thereby makes the sealed effect of sealed wall better.
Optionally, the inner wall of the steel sheet pile body is kept away from to the catching groove still is equipped with the clamp plate, the clamp plate is used for compressing tightly and meets the water inflation sealing rod and realize fixing.
Through the technical scheme, the water-swelling water stop strip is fixed on the inner wall of the catching groove through the pressing plate, so that the water-swelling water stop strip is more convenient to mount.
Optionally, connect the both ends of detaining portion along length direction still all to be equipped with the guide block, two the cross sectional area of guide block diminishes towards the direction of keeping away from each other gradually, the guide block is used for sheltering from water-swelling sealing rod at the steel sheet pile in-process of inserting and beating.
Through above-mentioned technical scheme, set up the guide block, when the steel sheet pile inserts in the soft soil foundation, shelter from the water-swelling sealing rod through the guide block, reduce and lead to the damage of water-swelling sealing rod at the insertion in-process for holistic use is more convenient.
Optionally, the outer cladding of meeting water inflation sealing rod has the water barrier film, the guide block is equipped with broken tooth, broken tooth be used for with the water barrier film breaks.
Through above-mentioned technical scheme, when the steel sheet pile inserts the weak soil in, the water-stop membrane can reduce the water in meeting water inflation sealing rod and the soft soil foundation and meet the emergence inflation, when next steel sheet pile inserts, its thread-splice looks mutual lock in-process, inserted steel sheet pile is inserting after, broken tooth on the guide block of inserted steel sheet pile earlier can cut the water-stop membrane that inserts the steel sheet pile later broken, inserted steel sheet pile earlier's water-stop membrane then is cut broken by inserted steel sheet pile's broken tooth after, the water-stop membrane cuts the back, it is sealed to extrude formation each other after meeting water inflation sealing rod rainwater inflation. Set up water-stop membrane and broken tooth for the steel sheet pile has reduced when assembling and has met the too early inflation of water inflation sealing rod and lead to assembling the in-process with the damaged condition that influences the sealed effect of concatenation department of water inflation sealing rod, makes holistic installation more convenient.
Optionally, S11 is further provided between S1 and S2, and a temporary drainage arrangement is provided, and a temporary drainage gutter is provided around the construction area.
Through above-mentioned technical scheme, when facing interim precipitation, the side ditch of draining makes things convenient for the rainwater in time to drain away.
Optionally, in S5, before the sealing film is laid, a sealing groove is formed in an outer ring of the sealing wall area, an outer periphery of the sealing film is correspondingly attached to the sealing groove, and then clay is used for backfilling; the sealing membrane is cut at the position corresponding to the main pipe of the sealing membrane, and the main pipe is extended out of the sealing membrane through the external connecting pipe.
Through above-mentioned technical scheme, set up sealed ditch to backfill through clay, make laying of seal membrane more stable.
Optionally, the outer pipe outer wall is equipped with the pressure disk, and the shearing mouth department of seal membrane installs the rubber packing ring and compresses tightly the seal membrane in the pressure disk realization sealed fixed through annular solid fixed ring with the rubber packing ring.
Through above-mentioned technical scheme, set up pressure disk, rubber packing ring and solid fixed ring to make the sealed effect of seal membrane and external union coupling seam crossing more stable.
Optionally, the sealing membrane comprises a bottom geotextile, a polyvinyl chloride membrane and an upper geotextile from bottom to top.
Through above-mentioned technical scheme, the seal membrane carries out the intermediate layer protection through bottom geotechnological cloth and upper geotechnological cloth to reduce the condition that the seal membrane was stabbed by external impurity, make the use of seal membrane more stable.
Optionally, the filter tube comprises a tube body and a filter layer covering the tube body, and the tube body is provided with a plurality of through holes.
Through above-mentioned technical scheme, filter through the filter layer to reduce the condition that the sand grain that fills up the sand bed enters into the chimney filter, make holistic use more stable.
In summary, the present application includes at least one of the following beneficial technical effects:
(1) the sealing wall formed by splicing and enclosing the steel sheet piles has better sealing effect, so that the water infiltration condition of an external area is reduced in a water-rich soft soil area, and the curing effect of a soft soil foundation is better;
(2) by arranging the water-swelling water stop strip, the sealing performance of the splicing seams between the steel sheet piles is better, so that the sealing effect of the sealing wall is better;
(3) through setting up water-stop membrane and broken tooth for steel sheet pile has reduced when assembling and has met the too early inflation of water inflation sealing rod and lead to assembling the in-process with the damaged condition that influences the sealed effect of concatenation department of water inflation sealing rod, makes holistic installation more convenient.
Drawings
Fig. 1 is an overall schematic view of a steel sheet pile;
FIG. 2 is a schematic view of an assembly structure of a steel sheet pile;
FIG. 3 is a schematic view of a partial structure of a steel sheet pile;
FIG. 4 is a schematic view of a seam structure between the extension tube and the sealing membrane.
Reference numerals: 1. a steel sheet pile body; 2. a buckle connecting part; 3. buckling grooves; 4. a water-swelling sealing strip when meeting water; 5. a water-barrier film; 6. pressing a plate; 7. a guide block; 8. a fixing plate; 9. crushing teeth; 10. a sealing film; 11. an external connection pipe; 12. a platen; 13. a rubber gasket; 14. and (4) fixing the ring.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a construction method for reinforcing a soft soil foundation, which comprises the following steps:
and S1, measuring and setting out, and delineating a construction area, specifically an insertion area of the steel sheet pile, an insertion area of the plastic drainage plate and an outer ring drainage side ditch area. The method can be particularly used in a mode of positioning the piles at intervals and can also be used in a mode of dusting and drawing lines.
And S11, temporary drainage is set, temporary drainage side ditches are dug around the construction area, the section size of the drainage side ditch is 1m (height) multiplied by 0.5m (width), and the drainage side ditch is connected with a peripheral drainage system and is kept smooth.
And S2, inserting and driving the steel sheet piles, and sequentially inserting and driving the steel sheet piles in the insertion areas of the steel sheet piles through steel sheet pile inserting and driving equipment, so that the steel sheet piles are spliced to form the annular sealing wall. The steel sheet pile inserting and driving equipment generally adopts a driving and pulling machine, the length of each steel sheet pile is 9 meters, the structure of the steel sheet pile is shown in figure 1 and comprises a steel sheet pile body 1 and two buckling parts 2, the cross section of the steel sheet pile body 1 along the length direction is C-shaped, the two buckling parts 2 are fixed at two ends of the steel sheet pile body 1 in the width direction in a one-to-one correspondence manner, and the two buckling parts 2 are symmetrically arranged. Each connecting and buckling part 2 is provided with a buckling groove 3, and the interface groove is formed in the end face, perpendicular to the length direction and the width direction, of the steel sheet pile body 1, of the connecting and buckling part 2. When several steel sheet pile concatenation formed the sealed wall, the catching groove 3 of a steel sheet pile was kept away from the lateral wall of steel sheet pile body 1 and is used for imbedding catching groove 3 of another steel sheet pile and realizes the concatenation.
Referring to fig. 2, the inner side wall of each buckle groove 3, which is far away from the steel sheet pile body 1, is further provided with a water-swelling water stop strip 4, and the water-swelling water stop strip 4 is a unique new rubber product and is a general name of a putty-type water stop strip and a product-type water stop strip with water swelling performance. The rubber generates 2-3 times of expansion deformation after meeting water, fills all irregular surfaces, cavities and gaps of the joint, generates huge contact pressure and thoroughly prevents leakage. The water-swelling water stop strip 4 extends along the length direction of the steel sheet pile body 1. Keep away from steel sheet pile body 1's inner wall at catching groove 3 and still be fixed with clamp plate 6, clamp plate 6 is in connecing 2 integrated into one piece in knot portion, thereby clamp plate 6 is used for compressing tightly water-swelling sealing rod 4 and fixes water-swelling sealing rod 4 in catching groove 3.
As shown in fig. 2 and 3, each water-swellable seal 4 is wrapped with a water-stop film 5, and the water-stop film 5 is a plastic film. Both ends of the buckling part 2 along the length direction are also fixed with guide blocks 7, and the guide blocks 7 are arranged on the side walls of the buckling grooves 3 far away from the corresponding steel sheet pile bodies 1. The one end that two guide blocks 7 of same portion 2 that detains that connects kept away from each other all is equipped with the chamfer, and the chamfer is located the one end that guide block 7 is close to steel sheet pile body 1 to make the same cross sectional area who connects two guide blocks 7 of detaining portion 2 diminish towards the direction of keeping away from each other gradually. Guide block 7 shelters from water-swelling sealing rod 4 along the projection of 1 length direction of steel sheet pile body to inserting at the steel sheet pile and beating the in-process, guide block 7 can shelter from protection to water-swelling sealing rod 4, reduces water-swelling sealing rod 4 and squeezes in-process and earth between the friction breakage or cracked at the steel sheet pile. Guide block 7 is fixed with fixed plate 8, when guide block 7 with connect knot portion 2 fixed, will laminate earlier fixed plate 8 between catching groove 3 and chance water inflation sealing rod 4, when clamp plate 6 will meet water inflation sealing rod 4 pressure fastening timing, also the pressfitting is fixed with fixed plate 8 to fix guide block 7 at connecing knot portion 2.
Still all be fixed with a plurality of broken teeth 9 on every guide block 7, a plurality of broken teeth 9 are interval distribution, and broken tooth 9 is used for carrying out the breakage to meeting water-stop membrane 5 of water inflation sealing rod 4 of the steel sheet pile of splicing mutually. Specifically, when the steel sheet pile inserts the weak soil, water barrier film 5 can reduce meet the water inflation sealing rod 4 and meet the emergence inflation with the water in the soft soil foundation, when next steel sheet pile inserts, it connects 2 mutual lock in-process of knot portion, inserted steel sheet pile is inserting after, broken tooth 9 on earlier inserted steel sheet pile's guide block 7 can cut open the water barrier film 5 that inserts the steel sheet pile after, inserted steel sheet pile's water barrier film 5 is then cut open by inserted steel sheet pile's broken tooth 9 after, water barrier film 5 cuts open the back, it is sealed to extrude formation each other after 4 rainwater inflation sealing rods of meeting water inflation.
And S3, inserting plastic drainage plates, and inserting a plurality of plastic drainage plates in the area defined by the sealing wall through a hydraulic plate inserting machine, wherein the plastic drainage plates are arranged in a quincunx manner, and the distance between the plastic drainage plates is 1.2 m.
And S4, paving a sand cushion layer, paving a plurality of filter pipes on the sand cushion layer, installing a main pipe, and communicating the filter pipes through the main pipe in the paving process of the sand cushion layer. And then filling and paving the sand to ensure that the sand cushion layer is higher than the upper end surfaces of the filter pipe and the main pipe. The filter tube comprises a tube body and a filter layer wrapping the tube body, a plurality of through holes are formed in the tube body along the circumferential direction, and the filter layer is made of water-permeable non-woven geotextile. After the sand bedding layer is finished, the upper surface of the sand bedding layer is higher than the upper end surface of the sealing wall.
And S5, laying the sealing film 10, and laying the sealing film 10 on the upper end face of the region enclosed by the sealing wall to realize sealing. The sealing membrane 10 comprises bottom geotextile, a polyvinyl chloride membrane and upper geotextile from bottom to top, wherein the bottom geotextile and the upper geotextile are both made of 300-500 g/m2 non-woven geotextile, the polyvinyl chloride membrane is provided with three layers, and the thickness of each layer is 0.14 mm. Before the sealing membrane 10 is laid, a sealing ditch is arranged on the outer ring of a sealing wall area, the outer periphery of the sealing membrane 10 is correspondingly attached into the sealing ditch, then clay is used for backfilling, the ditch wall inside the sealing ditch needs to be smooth, the sealing membrane 10 is laid into the ditch along the inner side of the ditch wall after digging, the sealing membrane 10 is tightly attached to the inner wall of the ditch, the sealing membrane 10 is placed to the bottom of the ditch, the membrane edge is inserted into pit bottom soil for about 10cm along the inner wall of the sealing ditch, then clay is used for backfilling, and the backfilling is carried out until the depth of the peripheral ground is about 30 cm.
Referring to fig. 4, the seal membrane 10 is cut at the location of the seal membrane 10 corresponding to the main pipe, which extends outside the seal membrane 10 through the extension pipe 11. A pressure plate 12 is fixed on the outer wall of the external connecting pipe 11, the pressure plate 12 is positioned in the area covered by the sealing membrane 10, a rubber gasket 13 is installed at the shearing port of the sealing membrane 10, and the rubber gasket 13 is positioned at one end, far away from the pressure plate 12, of the sealing membrane 10. The outer wall of the outer adapter 11 is further connected with a fixing ring 14 in a threaded manner, and the rubber gasket 13 is pressed against the sealing membrane 10 on the pressure plate 12 through the annular fixing ring 14 to realize sealing fixation.
And S6, vacuumizing, wherein the main pipe penetrates out of the sealing film 10 to be connected to a vacuumizing device, and the vacuumizing device generally adopts a jet pump to vacuumize through the vacuumizing device. During vacuum pumping, trial vacuum pumping is firstly carried out, the trial vacuum pumping is preferably carried out for 7-10 days, the vacuum pump is required to reach more than 95kPa during vacuum pumping, and the vacuum pressure under the membrane is required to be maintained at more than 80 kPa. If the value is lower than the abnormal value, the reason should be immediately searched and processed in time. And (5) observing parameters such as vacuum pressure, sedimentation amount and the like when the sample is started. After the trial pumping meets the requirement, the water covering can be shifted to a normal vacuum-pumping stage, the water covering thickness is preferably 20-40cm, after the water covering, the vacuum pressure under the film is gradually stabilized, the vacuum-pumping is continuously carried out at the pressure of more than 80Kpa, and a standby power supply system is started immediately if power failure occurs. And in the vacuum preloading period, the set vacuum pump is kept to continuously operate.
And S7, vacuum unloading, namely stopping the operation of the vacuum pumping device after the vacuum is unloaded after the sedimentation rate index reaches the relevant requirement.
The working principle of the embodiment is as follows:
in the vacuumizing process, water in gaps in the soft soil foundation is drained to a sand cushion layer on the upper portion through the plastic drainage plate and then is drained away through the filter pipe and the main pipe, and the water content in the soft soil foundation is reduced. In addition, the sealed wall that the steel sheet pile concatenation encloses has improved the leakproofness of sealed wall, and the vacuum of evacuation process, in addition, connects knot portion 2 to be equipped with and meets water inflation sealing rod 4, ensures that steel sheet pile stagnant water and the "gas" effect of "among the evacuation process, and then makes the sealed effect of sealed wall better, has reduced the condition of external regional water infiltration to make the solidification effect of soft soil foundation better.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: 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 (7)
1. A construction method for reinforcing a soft soil foundation is characterized by comprising the following steps: the method comprises the following steps:
s1, measuring and setting out;
s2, inserting and driving steel sheet piles, and splicing the steel sheet piles to form an annular sealing wall; the steel sheet pile structure comprises a steel sheet pile body (1) and buckling parts (2) arranged at two ends in the width direction, wherein the buckling parts (2) are respectively provided with a buckling groove (3), and when the steel sheet piles are spliced, the buckling groove (3) of one steel sheet pile is far away from the side wall of the steel sheet pile body (1) and is used for being embedded into the buckling groove (3) of the other steel sheet pile to realize splicing; the inner side wall, far away from the steel sheet pile body (1), of the buckling groove (3) is further provided with a water-swelling water stop strip (4), and the water-swelling water stop strip (4) extends along the length direction of the steel sheet pile body (1); the inner wall of the buckling groove (3) far away from the steel sheet pile body (1) is further provided with a pressing plate (6), the pressing plate (6) is used for pressing the water-swelling water stop strip (4) to be fixed, two ends of the buckling part (2) along the length direction are also provided with guide blocks (7), the cross-sectional areas of the two guide blocks (7) are gradually reduced towards the direction far away from each other, and the guide blocks (7) are used for shielding the water-swelling water stop strip (4) in the inserting and beating process of the steel sheet pile;
s3, inserting plastic drainage plates, and inserting a plurality of plastic drainage plates in the area surrounded by the sealing wall;
s4, paving a sand cushion layer, wherein in the paving process of the sand cushion layer, a layer of sand cushion layer is paved, then a plurality of filter pipes are paved on the sand cushion layer, then a main pipe is installed, the plurality of filter pipes are communicated through the main pipe, and then sand is filled and paved, so that the sand cushion layer is higher than the upper end surfaces of the filter pipes and the main pipe;
s5, laying a sealing film (10), laying the sealing film (10) on the upper end face of the region enclosed by the sealing wall to realize sealing, and penetrating a main pipe out of the sealing film (10);
s6, vacuumizing, wherein the main pipe penetrates out of the sealing film (10) and is connected to a vacuumizing device, and vacuumizing is performed through the vacuumizing device;
and S7, vacuum unloading.
2. A soft soil foundation reinforcing construction method according to claim 1, characterized in that: the water-swelling water stop rod (4) is coated with a water-stop film (5), the guide block (7) is provided with breaking teeth (9), and the breaking teeth (9) are used for breaking the water-stop film (5).
3. A soft soil foundation reinforcing construction method according to claim 1, characterized in that: s11 is further arranged between S1 and S2, temporary drainage is arranged, and temporary drainage side ditches are arranged around the construction area.
4. A soft soil foundation reinforcing construction method according to claim 1, characterized in that: in S5, before the sealing film (10) is laid, a sealing ditch is opened on the outer ring of the sealing wall area, the outer periphery of the sealing film (10) is correspondingly attached into the sealing ditch, and then clay is used for backfilling; the sealing membrane (10) is cut at the position of the sealing membrane (10) corresponding to the main pipe, and the main pipe is extended out of the sealing membrane (10) through the external connecting pipe (11).
5. A soft soil foundation reinforcing construction method according to claim 4, characterized in that: the outer wall of the outer connecting pipe (11) is provided with a pressure plate (12), a rubber gasket (13) is installed at a shearing opening of the sealing membrane (10), and the rubber gasket (13) is compressed on the sealing membrane (10) through an annular fixing ring (14) to realize sealing and fixing on the pressure plate (12).
6. A soft soil foundation reinforcing construction method according to claim 1, characterized in that: the sealing membrane (10) comprises bottom geotextile, a polyvinyl chloride membrane and upper geotextile from bottom to top.
7. A soft soil foundation reinforcing construction method according to claim 1, characterized in that: the filter tube comprises a tube body and a filter layer wrapping the tube body, and the tube body is provided with a plurality of through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110513745.8A CN113216134B (en) | 2021-05-12 | 2021-05-12 | Construction method for reinforcing soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110513745.8A CN113216134B (en) | 2021-05-12 | 2021-05-12 | Construction method for reinforcing soft soil foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113216134A CN113216134A (en) | 2021-08-06 |
| CN113216134B true CN113216134B (en) | 2022-06-21 |
Family
ID=77095156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110513745.8A Active CN113216134B (en) | 2021-05-12 | 2021-05-12 | Construction method for reinforcing soft soil foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113216134B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775578B (en) * | 2022-05-19 | 2023-11-03 | 江苏建航工程有限公司 | Rotary excavation steel sheet pile under complex stratum and construction process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225656A (en) * | 2008-01-31 | 2008-07-23 | 中交第四航务工程局有限公司 | Method for rapidly reinforcing ultra-soft soil superficial zone and packaged technology |
| CN204139159U (en) * | 2014-10-09 | 2015-02-04 | 宿迁华夏建设(集团)工程有限公司 | Side slope deep layer gutter |
| CN204589991U (en) * | 2015-02-11 | 2015-08-26 | 李伟 | A kind of vacuum preloading steel sheet pile envelope wall |
| CN106368208A (en) * | 2015-07-20 | 2017-02-01 | 上海思珂润机电有限公司 | Water resistance method for steel sheet pile |
-
2021
- 2021-05-12 CN CN202110513745.8A patent/CN113216134B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225656A (en) * | 2008-01-31 | 2008-07-23 | 中交第四航务工程局有限公司 | Method for rapidly reinforcing ultra-soft soil superficial zone and packaged technology |
| CN204139159U (en) * | 2014-10-09 | 2015-02-04 | 宿迁华夏建设(集团)工程有限公司 | Side slope deep layer gutter |
| CN204589991U (en) * | 2015-02-11 | 2015-08-26 | 李伟 | A kind of vacuum preloading steel sheet pile envelope wall |
| CN106368208A (en) * | 2015-07-20 | 2017-02-01 | 上海思珂润机电有限公司 | Water resistance method for steel sheet pile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113216134A (en) | 2021-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109208651B (en) | Construction method and structure of deformation joint water-drainage-preventing structure of underground engineering super-long structure body | |
| CN109736340B (en) | Dewatering device and method for guaranteeing integrity of cushion layer by reserving dewatering well on foundation slab | |
| CN110219313B (en) | Drainage system and construction method for underground construction blind well | |
| CN109488371B (en) | Waterproof system of full-enclosed waterproof station and dynamic setting and quantity-limiting drainage method | |
| KR101859612B1 (en) | Reinforcement and waterproof structure of vertical shafts-utility tunnels interface | |
| CN113216134B (en) | Construction method for reinforcing soft soil foundation | |
| CN102839691B (en) | Quick sealing method and device for sandless cement pipe deep well dewatering wellhead | |
| CN109505653A (en) | A kind of stifled arrange of convertible type of rich water tunnel combines supporting construction | |
| CN112411518A (en) | Soft foundation section vacuum combined surcharge preloading construction method | |
| CN111206564A (en) | Construction method for consolidating foundation by combining vacuum drainage and water-borne preloading | |
| CN113373962B (en) | Combined leakage stoppage construction method for deep foundation pit | |
| CN116446376A (en) | Vacuum preloading construction process | |
| JP5758274B2 (en) | Impermeable wall and construction method of impermeable wall | |
| KR102103978B1 (en) | Reinforcement and waterproof structure of vertical shafts for utility interface | |
| CN110670419A (en) | Method for renovating waterproof and drainage structure of ballastless track roadbed | |
| CN113216145B (en) | Vacuum preloading construction method for steel sheet pile combined clay sealing wall | |
| CN115748601A (en) | Dam leakage repairing method | |
| CN216275788U (en) | Drainage device used after failure of water interception curtain of deep foundation pit | |
| CN115012452A (en) | Post-cast strip construction process and basement drainage pressure relief structure | |
| CN109944263B (en) | Double-vacuum dewatering system and method | |
| CN109837966B (en) | Structure for treating lateral wall waterproof curtain of foundation pit on main channel side slope by replacement and filling method and construction method | |
| CN109914358B (en) | Gate box buried pipe type water outlet structure for dredging engineering | |
| CN206736888U (en) | A kind of novel evacuated pre-pressing system of Soft Ground | |
| CN215857803U (en) | Gushing karst fracture water plugging device | |
| CN111365039A (en) | Tunnel water leakage treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |