CN105019422A - Foundation construction method for local solidification of topsoil and composite pile bearing - Google Patents
Foundation construction method for local solidification of topsoil and composite pile bearing Download PDFInfo
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- 238000007711 solidification Methods 0.000 title claims abstract description 31
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Abstract
The invention discloses a foundation construction method for local solidification of topsoil and composite pile bearing. The foundation construction method for local solidification of the topsoil and composite pile bearing comprises the steps that the topsoil is solidified; a pile foundation is constructed; and non-initial-set solidified soil or cement mortar or plain concrete is used for backfilling holes of the pile foundation. The invention further discloses another foundation construction method for local solidification of the topsoil and composite pile bearing. The construction method comprises the steps that the pile foundation is constructed firstly, and then the topsoil is solidified. The generation of the solidified layer and the piling work of mixing piles can be conducted alternatively and are supplementary to each other, secondary foundation treatment is not needed, the construction efficiency is high, and the cost is low compared with the cost of traditional mixing piles.
Description
Technical field
The application relates to a kind of method for processing foundation, and particularly a kind of topsoil solidifies on the spot and combines with stake the method for processing foundation carried, and is applicable to process weak soil, ultra-soft soil deep soft foundation engineering.
Technical background
Along with the fast development of the engineering constructions such as coastal port, industrial construction, highway communication, particularly some engineerings need be built in containing Deep Thick Soft Ground Area, the high porosity feature of weak soil in microstructure is the key factor affecting its compressive strain, cause that weak soil compressibilty is large, shear strength is low and poor permeability, so need reinforce Deep Thick Soft Ground.
At present, consolidation and composite foundation method are divided into the reinforcement means of deep soft foundation.Discharging consolidation method method all needs the long duration, and intensity raising has certain restriction.For the duration, the relatively tight and area higher to ground requirement for bearing capacity generally adopts the processing mode of vertical composite foundation.Vertical composite foundation carries out pile foundation when setting, and foundation surface should reach the bearing capacity that pile foundation sets.So large when run into topsoil water content, during the high silt soil of compressibilty, above processing method all can not be constructed at treated side.Processing mode conventional is at present the method for processing foundation of shallow-layer discharging consolidation and composite foundation Combination application, need be spread a layer of clay during the process of shallow-layer vacuum preloading work grid, geotextiles, manually carry out slotting plastic strip plate thereon, only process about 4m, carry out the vacuum preloading without bed course afterwards, this kind of method generally needs the 3-4 month, and bearing capacity of foundation soil generally reaches 50kPa-55kPa, even lower.In order to meet the bearing capacity that pile foundation sets, generally also at treated side upper berth sand-gravel cushion, need then carry out the construction of composite foundation.
Meanwhile, above method all need adopt bed course in processing soft soil process, and bed course plays diffusion-induced stress and coordinates the effect of stake soil distortion.The sand-gravel cushion of current employing belongs to discrete material, does not have cohesion between particle and particle, causes when basement process, being out of shape inconsistent between stake soil, causing differential settlement, when light fill road for preventing differential settlement, need densely covered pile, increase engineering cost.And sand-gravel cushion generally adopts the material such as sand, stone, in recent years, due to a large amount of exploitations of mountain stone, cause the in short supply of resource, material cost is high; Cause the natural calamity of landslide, mud-rock flow etc. simultaneously.And the cost of transportation of material is also higher, thus cause the cost of this kind of processing method higher.Also can cause waste in transportation, also can cause pollution in various degree to environment on the way.
Given this, at present in order to solve the engineering of deep soft foundation, need a kind of method for processing foundation replacing the sand cushion in conventional method and stake to combine of application badly, not only can meet ground requirement for bearing capacity and ensure ground uniform settlement but also rapid construction, save the novel foundation processing method of sand and stone resources.
application content
The object of the application is to provide a kind of topsoil to solidify the foundation construction method combining with stake and carry on the spot, to improve the supporting capacity of soft foundation, reduces basement process expense, ensures the uniform settlement of ground.
In order to realize above-mentioned technical purpose, the application have employed following technical scheme:
Topsoil solidifies the foundation construction method combining with stake and carry on the spot, comprises the following steps:
Step one, cured skin soil; Native top layer adopts curing apparatus curing materials and in-situ soil to be carried out three-dimensional stirring on the spot to solidify in position, and make it formation cured layer, the intensity of cured layer is 60-1000kPa;
Step 2, pile foundation construction; When the requirement that the safety that the bearing capacity of cured layer meets pile foundation construction equipment and personnel enters, what this cured layer carried out pile foundation sets construction;
When the intensity of cured layer is more than 1000kPa, when pile foundation cannot be set, should first carrying out drawing hole and local excavation near pile foundation, treating that pile foundation is cured process again to the hole caused because drawing hole and local excavation after setting;
Step 3, backfill or stirring; After pile foundation sets end, with the solidified earth of non-initial set, cement mortar or plain concrete the hole stayed because setting pile foundation on cured layer backfilled or again carry out stirring solidification to the cured layer destroyed within the scope of the 0.2-1 of Pile Diameter times, making itself and not destroyed cured layer be connected to become entirety.
In described step one, the thickness of cured layer is 0.5-3.0m.
The mode forming cured layer in described step one is solidified to in-situ soil vertical mechanical agitation up and down solidification or after adopting layering stirring pine to turn over for adopting curing apparatus on the spot again.
Described step 2 pile foundation is the combination of one or any two kinds of flexible pile or rigid pile, and wherein rigid pile is preformed pile, in situ concrete pile or plastic sleeve concrete pile, before setting rigid pile, is first sealed up on stake top with steel plate or prefabricated units; Setting in rigid pile process, bottom pile foundation upper end and cured layer, leave the gap of 5-20cm, then to stay the hole on cured layer with the solidified earth back-filling in layers of concrete or non-initial set because setting pile foundation.
Described step 2 pile foundation is the combination of one or any two kinds of flexible pile or rigid pile, wherein flexible pile is cement mixing pile or other cement earth piles, set in flexible pile process, flexible pile upper end is made to be in cured layer, pile body is connected closely with cured layer, and pile foundation top exceed 5-30cm bottom cured layer; Continuation mixing plant solidifies process again to upper earthing afterwards, and expands the scope stirred.
When backfilling by the solidified earth of non-initial set in described step 3, adopt layering to pave the method for compacting, form inverted trapezoidal structure.
Topsoil solidifies the foundation construction method combining with stake and carry on the spot, comprises the following steps:
Steps A, pile foundation construction, when the requirement that the safety that the bearing capacity of in-situ soil meets pile foundation construction equipment and personnel enters, what this in-situ soil was carried out pile foundation sets construction;
Step B, cured skin soil, first adopts on weak soil top layer curing apparatus curing materials and original position soil layer to be carried out three-dimensional stirring on the spot and solidifies, make it to form cured layer.
The mode forming cured layer in described step B is solidified to the vertical mechanical agitation up and down solidification of original position soil layer or after adopting layering stirring pine to turn over for adopting curing apparatus on the spot again.
Described steps A pile foundation is the combination of one or any two kinds of flexible pile or rigid pile, wherein flexible pile is cement mixing pile or other cement earth piles, rigid pile is preformed pile, in situ concrete pile or plastic sleeve concrete pile, is sealed on stake top before setting rigid pile with steel plate or prefabricated units.
The application adopts technique scheme to have the following advantages:
(1) topsoil solidifies on the spot and curing apparatus can be utilized to spray curing compound and topsoil once stirred at design thickness place, and replace the sand cushion in conventional procedure, reduction construction costs, economizes on resources, play the bearing behavior of different pile foundation simultaneously simultaneously.
(2) cured layer that topsoil is formed after solidifying process is on the spot the plate body that soil body curing compound and native Minerals generation chemical reaction are formed, and have certain cohesiveness, can give full play to the characteristic of inter-pile soil, load-carrying properties improve.
(3) cured layer that topsoil solidify to form on the spot can meet bearing capacity that is artificial and plant equipment, for carrying out of subsequent construction provides job platform.
(4) generation of cured layer can intersect with the work that sets of agitation pile and carries out, and complement each other, without the need to secondary basement process, efficiency of construction is high, lower than traditional agitation pile comparative cost.
Accompanying drawing explanation
Fig. 1 shows topsoil and solidifies on the spot and combine with stake the foundation structure carried;
Fig. 2 is that topsoil solidifies the work progress combining the foundation structure carried with stake on the spot;
Fig. 2-a is the work progress that topsoil solidifies on the spot;
Fig. 2-b is the process of construction stake on cured layer;
Fig. 2-c is that topsoil solidifies the schematic diagram combining the foundation structure that carries with stake and constructed on the spot;
Fig. 3 is the connection of agitation pile stake top and cured layer;
Fig. 4 is the connection of preformed pile or plastic sleeve concrete pile stake top and cured layer;
Fig. 5 is the overall structure of mixing plant;
Fig. 6 is the overall structure of blade mechanisms;
In accompanying drawing, main mark is described as follows: 1-solidifies processing region; 2-cured layer; 3-in-situ soil; 4-pile foundation; 5-bearing stratum; 6-curing apparatus; 7-curing compound automatic ration feeder apparatus; 8-conveying pipeline; 9-stirring-head; 10-pile body construction machinery; 11-sets equipment; 12-fills soil.
Detailed description of the invention
The mode forming cured layer 2 is determined according to the intensity of original position soil layer 3, can utilize the vertically mechanical agitation solidification process up and down of curing apparatus 6 pairs of original position soil layers 3 when original position soil layer 3 intensity is lower; Stirring-head 9 mechanical agitation pine can be adopted multi-shell curing is turned over when curing apparatus 6 directly cannot process original position soil layer 3.
If the smooth construction that shallow-layer is cured as piling machinery provides job platform, curing depth can be controlled between 0.5 ~ 3.0m, the requirement for bearing capacity of plant equipment can be met, solidification soil layer 2 limit strength control can meet at about 60 ~ 1000kPa the requirement that pile foundation sets without side.
In the sequence of construction of the application, first construction and solidification layer 2 can be adopted to construct again pile foundation 4, also the mode of pile foundation 4 construction and solidification layer 2 again of first constructing can be adopted, embodiment 1-3 is that first construction and solidification layer 2 is constructed the construction method of pile foundation 4 again, and embodiment 4 is the construction method of pile foundation 4 construction and solidification layer 2 again of first constructing.
Embodiment 1
When pile foundation 4 is cement mixing pile, described method for processing foundation is:
As shown in Figure 2, original position soil layer 3 is carried out smooth location, and solidification processing region 1 is divided in soil layer 3 in position, drive solidification construction equipment 6 into predeterminated position, by curing compound automatic ration feeding system 7 and conveying pipeline 8, curing materials is transported to the stirring-head 9 in solidification construction equipment 6, in solidification processing region 1, forms the thick cured layer of 2.0m 2.Can carry out the construction of cement mixing pile on completed cured layer 2, cured layer intensity should control between 60kPa-1000kPa, and pile spacing is 3.1m, and treating depth is 20m.
When cured layer 2 intensity is higher, when pile foundation 4 cannot be squeezed into smoothly, can adopt and first carry out drawing hole and mechanical local excavation makes pile foundation 4 set smoothly, again with mixing plant, process is cured to upper earthing body afterwards.
When solidify on the spot process and cement mixing pile set can not carry out simultaneously time, now cured layer intensity is higher, pile foundation 4 can not set smoothly, can adopt and not be cured at the topsoil of pile foundation 4 position range, be cured process again after pile body sets to this part.
Shorter when the duration, when needing the construction carrying out pile foundation 4 immediately, be entering fast of satisfied machinery, shallow-layer curing depth can be strengthened, or on the basis of conventional solidified dose, add early strength admixture or retarding agent simultaneously.
As shown in Figure 2, first adopt on weak soil top layer curing apparatus curing materials and original position soil layer to be carried out disposable solid on the spot and stir and solidify, make it to form cured layer.By pile body construction machinery 10 and mixing plant 11, stirring is expected by automatic ration feeding system 7 by the cured layer 2 hardened, stirring material is carried out stirring with original position soil layer 3 on the position designed and forms cement mixing pile, cement mixing pile is stirred to above 5-30cm at the bottom of cured layer 2 design thickness to be stopped, afterwards with mixing plant again on cover solidified earth and again stir, stirring scope is expanded during stirring, as shown in Figure 3, in order to cohere Cheng Yiti with other soil be cured, avoid destroying, adopt step to stir.The original position finally defined as shown in Figure 1 is solidified on the spot and is combined with cement mixing pile the foundation structure carried.
Embodiment 2
When pile foundation 4 is preformed pile, foundation construction method:
As Fig. 2, original position soil layer 3 is carried out smooth location, and solidification processing region 1 is divided in soil layer 3 in position, drive solidification construction equipment 6 into predeterminated position, by curing compound automatic ration feeding system 7 and conveying pipeline 8, curing materials is transported to the stirring-head 9 in solidification construction equipment 6, in solidification processing region 1, forms the thick cured layer of 1.7m 2.Then, the construction of preformed pile can be carried out on completed cured layer 2, cured layer intensity should control between 60kPa-1000kPa, pile spacing is 3.0m, and treating depth is 20m, as shown in Figure 2, by pile body construction machinery 10 with set equipment 11, the pile foundation that the cured layer 2 hardened carries out end part seal sets, and before setting, using steel plate or the cavity of prefabricated units to preformed pile seal, so as not on cover encapsulant and enter preformed pile inside.Preformed pile sets 5cm-20cm below at the bottom of cured layer 2 design thickness to be stopped, carry out being backfilled to cured layer 2 design bottom with filling soil 12 afterwards, backfill scope (as Fig. 4) is expanded with during 12 backfill of filling soil, preferably, filling soil 12 is the solidified earth of non-initial set, cement mortar or plain concrete, and the original position finally defined as shown in Figure 1 is solidified on the spot and combined with preformed pile the foundation structure carried.
Embodiment
3
When pile foundation 4 is plastic sleeve concrete pile, foundation construction method:
As shown in Fig. 2,2-a, 2-b, 2-c, original position soil layer 3 is carried out smooth location, and solidification processing region 1 is divided in soil layer 3 in position, drive solidification construction equipment 6 into predeterminated position, by curing compound automatic ration feeding system 7 and conveying pipeline 8, curing materials is transported to the stirring-head 9 in solidification construction equipment 6, in solidification processing region 1, forms the thick cured layer of 2.0m 2.Then, can carry out the construction of plastic bushing on completed cured layer 2, during construction plastic bushing, need add a segment elongation pipe on design length top, the length of extension tubing should be greater than cured thickness.
As shown in Figure 2, according to design length, as 20m, by pile body construction machinery 10 with set equipment 11, the cured layer 2 hardened carries out plastic bushing construction, build with concrete afterwards, build 10cm-15cm below at the bottom of solidification design thickness, stop pulling out extension tubing, after concrete setting, carry out being backfilled to cured layer design bottom with the solidified earth of non-initial set or plain concrete, backfill scope (as Fig. 4) is expanded during solidified earth back-filling in layers with non-initial set, the original position finally defined as shown in Figure 1 is solidified on the spot and is closed with plastic sleeve concrete pile the foundation structure carried.
Embodiment 4
This embodiment is the sequence of construction of construction and solidification layer 2 after pile foundation 4 of first constructing, described pile foundation 4 is also the combination of one or any two kinds of flexible pile or rigid pile, wherein flexible pile is cement mixing pile or other cement earth piles, and rigid pile is preformed pile, in situ concrete pile or plastic sleeve concrete pile.
When pile foundation 4 is preformed pile, foundation construction method:
Steps A, the construction of pile foundation 4, when the requirement that the safety that the bearing capacity of original position soil layer 3 meets pile foundation construction equipment and personnel enters, what this original position soil layer 3 carried out pile foundation 4 sets construction;
Certain bearing capacity of foundation soil is needed because construction of prefabricated piles equipment sets, if during the requirement that the safety that the bearing capacity of original position soil layer 3 meets pile foundation construction equipment and personnel enters, stake machine is positioned, then set, the process of piling guarantees the verticality of stake, adopt Pile feeder stake to be sent into 5-20cm place under the bottom surface absolute altitude of cured layer, intensifies process controls and record, detection stake is long, verticality and stake top mark high.
Step B, cured skin is native, and soil layer 3 surface adopts curing apparatus on the spot to carry out solidifying after layering stirring pine turns over to the stirring-head that original position soil layer 3 carries out vertically mechanical agitation solidification or employing curing apparatus 6 up and down again in position, makes it to form cured layer 2.
As shown in Figure 5, a kind of mixing plant, comprises mixing arm, and mixing arm two bottom sides has intilted two inclined-planes, and each inclined-plane is respectively arranged with at least one mixing roller bearing, and mixing roller bearing is driven by driving arrangement and rotates, and mixing roller bearing is frustroconical; Described mixing roller bearing is distributed with blade mechanisms; Described mixing arm inside is provided with the curing compound conveying pipeline of extension type.
Preferably, the end of described curing compound conveying pipeline is provided with atomization mechanism.When mixing plant process surface location adopts curing compound to be pulvis, in order to avoid environment pollution, in good time beginning atomization mechanism.When atomization mechanism uses, will not add in atomization mechanism with curing compound generation chemical reaction liquid, the content of described liquid be generally about the 4-8% of solid.
Mixing roller bearing is designed to be the frictional resistance in order to reduce in whipping process and between the soil body in frustroconical.Curing compound conveying pipeline is designed to extension type, can reduce the pollution of curing compound when surface is stirred.
Preferably, blade mechanisms is that one-way spiral type is distributed on mixing roller bearing, and the soil body that mixing roller bearing rotates after a week in slewing area all can contact and disturbance, can stir without blind spot solid continuously, improve the uniformity of mixture after stirring, and disposable treating depth reaches 3m.
As shown in Figure 6, described blade mechanisms comprises the fixed head that is arranged on mixing roller bearing and is arranged at two orthogonal blades one on fixed head and blade two.Blade two is to destroy foundation soil structure, blade one is for stirring, in use procedure, blade two pairs of in-situ soil are utilized to cut, blade one and the in-situ soil of mixing roller bearing to destroyed is utilized to stir afterwards, blade mechanisms helically type is distributed on mixing roller bearing, and soil body solid can be realized to stir.
On the spot before solidification, steel plate or concrete need be adopted to close (object does not allow the top soil body fall among pile tube) to stake jacking row.Afterwards according to design thickness, adopt curing apparatus 6 to be cured process (to should be noted: the position existed there being pile tube, when adopting strong mixer to construct, for avoiding the Mixing Machine of curing apparatus, pile tube is affected, can the suitable distance from pile tube top about 5-20cm when stirring solidification, after reaching design thickness, carry out precompressed maintenance.
The application also can with the conbined usage such as geosynthetics, geo-grid and geotextiles.
Above-mentioned detailed description of the invention does not limit the technical scheme of the application in any form, and the technical scheme that the mode that every employing is equal to replacement or equivalent transformation obtains all drops on the protection domain of the application.
Claims (9)
1. topsoil solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, comprises the following steps:
Step one, cured skin soil; Native top layer adopts curing apparatus curing materials and in-situ soil to be carried out three-dimensional stirring on the spot to solidify in position, and make it formation cured layer, the intensity of cured layer is 60-1000kPa;
Step 2, pile foundation construction; When the requirement that the safety that the bearing capacity of cured layer meets pile foundation construction equipment and personnel enters, what this cured layer carried out pile foundation sets construction;
When the intensity of cured layer is more than 1000kPa, when pile foundation cannot be set, should first carrying out drawing hole and local excavation near pile foundation, treating that pile foundation is cured process again to the hole caused because drawing hole and local excavation after setting;
Step 3, backfill or stirring; After pile foundation sets end, with the solidified earth of non-initial set, cement mortar or plain concrete the hole stayed because setting pile foundation on cured layer backfilled or again carry out stirring solidification to the cured layer destroyed within the scope of the 0.2-1 of Pile Diameter times, making itself and not destroyed cured layer be connected to become entirety.
2. topsoil according to claim 1 solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, in described step one, the thickness of cured layer is 0.5-3.0m.
3. topsoil according to claim 1 solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, the mode forming cured layer in described step one is solidified to in-situ soil vertical mechanical agitation up and down solidification or after adopting layering stirring pine to turn over for adopting curing apparatus on the spot again.
4. topsoil according to claim 1 solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, described step 2 pile foundation is the combination of a kind of of flexible pile or rigid pile or two kinds, when pile foundation is rigid pile, this rigid pile is preformed pile, in situ concrete pile or plastic sleeve concrete pile, before setting rigid pile, first with steel plate or prefabricated units, stake top is sealed up; Setting in rigid pile process, bottom pile foundation upper end and cured layer, leave the gap of 5-20cm, then to stay the hole on cured layer with the solidified earth back-filling in layers of concrete or non-initial set because setting pile foundation.
5. topsoil according to claim 1 solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, described step 2 pile foundation is the combination of a kind of of flexible pile or rigid pile or two kinds, when pile foundation is flexible pile, this flexible pile is cement mixing pile, sets in flexible pile process, makes flexible pile upper end be in cured layer, pile body is connected closely with cured layer, and pile foundation top exceed 5-30cm bottom cured layer; Continuation mixing plant solidifies process again to upper earthing afterwards, and expands the scope stirred.
6. topsoil according to claim 1 solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, when backfilling by the solidified earth of non-initial set in described step 3, adopts layering to pave the method for compacting, forms inverted trapezoidal structure.
7. topsoil solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, comprises the following steps:
Steps A, pile foundation construction, when the requirement that the safety that the bearing capacity of in-situ soil meets pile foundation construction equipment and personnel enters, what this in-situ soil was carried out pile foundation sets construction;
Step B, cured skin soil, first adopts on weak soil top layer curing apparatus curing materials and original position soil layer to be carried out three-dimensional stirring on the spot and solidifies, make it to form cured layer.
8. topsoil according to claim 7 solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, the mode forming cured layer in described step B is solidified to the vertical mechanical agitation up and down solidification of original position soil layer or after adopting layering stirring pine to turn over for adopting curing apparatus on the spot again.
9. topsoil according to claim 7 solidifies the foundation construction method combining with stake and carry on the spot, it is characterized in that, described steps A pile foundation is the combination of a kind of of flexible pile or rigid pile or two kinds, when pile foundation is flexible pile, this flexible pile is cement mixing pile or other cement earth piles, when pile foundation is rigid pile, this rigid pile is preformed pile, in situ concrete pile or plastic sleeve concrete pile, is sealed on stake top before setting rigid pile with steel plate or prefabricated units.
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| CN110241695A (en) * | 2019-06-19 | 2019-09-17 | 贵州正业工程技术投资有限公司 | A kind of gravelly soil superelevation fill foundation reinforcement means |
| CN110700232A (en) * | 2019-10-15 | 2020-01-17 | 中瀛港湾（厦门）建设工程有限公司 | Construction method for soft foundation treatment |
| CN110835908A (en) * | 2018-08-16 | 2020-02-25 | 云南华坤装配式建筑有限公司 | Soft soil curing composite foundation treatment technology for assembled thin-wall light steel structure |
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| CN110886287A (en) * | 2019-09-29 | 2020-03-17 | 中交第一航务工程勘察设计院有限公司 | Shallow soft soil foundation curing structure and construction method thereof |
| CN111877302A (en) * | 2020-08-25 | 2020-11-03 | 广东劲拓建设工程有限公司 | Foundation construction method for in-situ solidification of surface soil and pile combined bearing |
| CN112195909A (en) * | 2020-10-20 | 2021-01-08 | 云南建投第一勘察设计有限公司 | Method for reinforcing soft foundation of road and parking lot |
| CN112962608A (en) * | 2021-02-25 | 2021-06-15 | 江苏地基工程有限公司 | Method for reducing bending damage of pipe pile in soft soil |
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| CN110700232A (en) * | 2019-10-15 | 2020-01-17 | 中瀛港湾（厦门）建设工程有限公司 | Construction method for soft foundation treatment |
| CN111877302A (en) * | 2020-08-25 | 2020-11-03 | 广东劲拓建设工程有限公司 | Foundation construction method for in-situ solidification of surface soil and pile combined bearing |
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| CN112195909A (en) * | 2020-10-20 | 2021-01-08 | 云南建投第一勘察设计有限公司 | Method for reinforcing soft foundation of road and parking lot |
| CN112962608A (en) * | 2021-02-25 | 2021-06-15 | 江苏地基工程有限公司 | Method for reducing bending damage of pipe pile in soft soil |
| CN112962608B (en) * | 2021-02-25 | 2022-08-05 | 江苏地基工程有限公司 | Method for reducing bending damage of pipe pile in soft soil |
| CN113373867A (en) * | 2021-06-30 | 2021-09-10 | 上海热湾环境科技有限公司 | Coastline soft foundation solidified soil structure and process |
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