CN101824817A - Drainage consolidation construction method for treating soft soil foundation by container stacking loading - Google Patents
Drainage consolidation construction method for treating soft soil foundation by container stacking loading Download PDFInfo
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- CN101824817A CN101824817A CN 201010163602 CN201010163602A CN101824817A CN 101824817 A CN101824817 A CN 101824817A CN 201010163602 CN201010163602 CN 201010163602 CN 201010163602 A CN201010163602 A CN 201010163602A CN 101824817 A CN101824817 A CN 101824817A
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Abstract
The invention relates to a drainage consolidation construction method for treating soft soil foundation by container stacking loading, belonging to the technical field of water containing soft soil foundation drainage and consolidation construction. The existing method directly takes earth and rock materials as stacking loading substances, has high transportation expenses and insufficient stacking loading pressure, and construction fails to satisfy the engineering project with higher requirements on bearing capacity required by the foundation. The method comprises the following construction steps: laying base materials, inserting drainage components, stacking and loading a box container on the base materials for prepressing, discharging ponding out of the foundation and the like. In the invention, the self weight of the box container and the weight of the stacking loading substances form a stacking loading monomer which has regular shapes, can be carried and is suitable for long distance transportation and stacking. According to the construction requirement of the foundation to be treated, the method can achieve flexible assembly, repeated use, reduced construction cost, high construction efficiency, clean process and small pollution; the stacking and unloading height significantly improves and realizes balanced stress of the foundation; and the foundation consolidated by the method has good consistency and high consolidation strength, thus facilitating to accurately calculate the stacking loading pressure of a unit area.
Description
[technical field]
The present invention relates to a kind of job practices of preloading formula Ground Treatment, belong to soft foundation draining, fixed technical field of construction.
[background technology]
Before various civil engineering constructions, need carry out discharging consolidation to the base usually and handle, make ground satisfy the requirement of strength of construction.Drainage consolidation construction method commonly used is to adopt preloading: lay layer of sand on pending foundation soil top, macadam or sand grains layer, vertically be plugged in the plastic draining member in the foundation soil then, the top of water discharge member and layer of sand, macadam or sand grains layer are in contact with one another and connect, thereby formation drainage channel, again at layer of sand, stack earth and stone material on macadam or the sand grains layer, utilize the weight of earth and stone material the bottom foundation soil to be produced the active force of malleation and extruding, make moisture content in the foundation soil penetrate the filter membranous layer of water discharge member, groove seepage flow in water discharge member is the auxilliary layer of sand of establishing to the face of land, in macadam or the sand grains layer, through the gutter that these intergranular horizontal penetrating passages dig around the ground top layer in advance, flow away again.In certain construction squeeze time, make the moisture content in the foundation soil mud constantly discharge ground, thereby the moisture content in the minimizing mud, the water level of reduction ground makes soil layer compression back produce sedimentation, the density of soil layer is improved, and the consolidation strength and the bearing capacity of ground also are improved.
Above job practices all is a mature technique, owing to need to adopt a large amount of earth and stone materials as the preloading thing, ground is exerted pressure, and there are the following problems:
1, because the graininess of earth and stone material, the earth and stone material preloading is highly limited, unrestrictedly preloading, thereby common direct stacking is difficult to reach design pressure, can not guarantee to reach the load mass of design, for example: need the pressure of unit area to reach 10 tons, need 10 meters high earth and stone materials of preloading approximately, preloading can only be pyramid (shown in Figure 1).Such preloading structure has caused that pressurized is V-shape in the ground, discontinuity, and the foundation settlement imbalance will form threat for top application worker subsequently, more can make building tilt and collapse when serious.If in the preloading process, implement to ram the skill of doing manual work simultaneously, but then preloading (shown in Figure 2) in echelon, but the preloading thing of compacting is difficult to remove again, and particularly during the subarea processing ground, the excavation that the preloading earth and stone material is reused, carrying, construction cost is very high in the compacting etc. once more.
2, since in the prior art earth and stone material be open-air preloading, squeeze time is long, the duration is interior as heavy rain, strong wind weather, can be to washing away the preloading body, even cause collapsing.
3, in certain some engineering, do not need the raising ground, if carry out preloading with the earth and stone material that ships, also to transport a large amount of earth and stone materials of these preloadings after the discharging consolidation construction completion, in this case, the cost of materials of earth and stone material, march into the arena and the expenses such as loading and unloading transport cost that appear on the scene very high, make the construction cost of engineering very high, and can cause the waste of environment pollution and resource.
4, there is the construction site of some engineerings not have a large amount of earth and stone materials, can't utilize earth and stone material as the preloading thing, just adopt the rubber water bag or carry out preloading, but the height of water level of water bag and reservoir be limited with the method for reservoir, preloading in light weight, the weak effect of discharging consolidation.
[summary of the invention]
The technical assignment of the technical problem to be solved in the present invention and proposition is the defective that overcomes prior art, and a kind of drainage consolidation construction method that is easy to easy to clean after the preloading of balanced height, easy construction, the construction, is convenient to transport, pollute the treating soft soil foundation by container stacking loading little, that cost is low is provided.For this reason, the present invention adopts following technical scheme:
The drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading is characterized in that comprising the steps: at least
The first step: there is the base-material in particle gap in laying on soft foundation, and offers perimeter trench; Normally lay sand, rubble, sand grains layer etc. ground is played the covering effect and forms the transverse drainage path, be convenient to follow-up preloading, certain deadweight is arranged simultaneously, help increasing preloading pressure; Excavate gutter etc. on the face of land, make moisture content in the ground be discharged to the face of land under pressure after, can unimpeded draining.
Second step: vertically plug the water discharge member that gos deep into ground; Can water discharge member be set in ground, make moisture in the ground under the effect of pressure, enter water discharge member, and flow to the face of land.
The 3rd step: a plurality of box describe device planar alignment ground preloadings on base-material, are carried out precompressed to pending ground; Utilize the deadweight of box describe device or/and the overall weight behind the fill material is exerted pressure to ground, promote that the moisture content in the ground arrives the face of land by drainage channel;
The 4th step: the ponding that oozes out the face of land is discharged ground.By gutter or discharge pipe line, utilize current self flow or after suction pump discharged ponding, foundation settlement was fixed, thereby satisfies follow-up civil engineering requirement.
Box describe device can be the cube shaped container of sizes such as cube of the same size or big I are combined into mutually in this patent, can place earth and stone material, water or other ponderable material within it, thereby form preloading thing, reach the purpose and the effect of piling prepressing discharging consolidation ground with suitable weight.It has overcome in the prior art loose for the graininess base-material, the shortcoming that preloading is highly limited, box describe device has played the effect that limits forcefully and finalize the design for the material that holds, so can be with a plurality of box describe device equal altitudes, carry out the hypervelocity preloading equably, the pyramid or the trapezoidal preloading of prior art are become the cuboid preloading, thereby satisfy the preloading pressure requirement of the equilibrium of working design, the fixed steady quality and the intensity of order construction ground significantly improve, owing to realized bigger preloading pressure (overload preloading) on the unit area, also can promote to improve drainage efficiency simultaneously.Adopt box describe device, can be according to the requirement of preloading weight, only utilize the weight of himself, perhaps fill material, perhaps a plurality of stacking, perhaps the combination of empty van and filling box stacks, perhaps be used, thereby adjust the weight of whole preloading on the ground unit area neatly, adapt to construction requirement with the earth and stone material preloading, quickening ground moisture content is discharged to the face of land and flows away, and promotes that ground is rapidly solidified.Box describe device adopts the metal material manufacturing usually, firm and durable, and quantity can be arranged buying in batches or customization according to the duration that ground is handled, and can repeated multiple times use, and reduces construction cost.What deserves to be explained is; need on ground, not adopt earth and stone material to level up at some; in the construction of bed hedgehopping ground; if carry out preloading with earth and stone material; to transport the job site to a large amount of earth and stone materials of these preloadings during construction; transport the job site; the workload that need carry out is bigger; expense is higher; earth and stone material usually can have many restrictions because of pollution in transit; not enough environmental protection; at this moment, if adopt box describe device, with box describe devices of packing in advance such as earth and stone materials; integral body is transported; loading and unloading; more convenient; cleaning is fit to long-distance transport, and the engineering construction cost is low; effective; easy construction; should operate, short and efficient height of duration more can reuse in different constructions.And utilize the box describe device preloading, and can extrapolate the preloading pressure of ground unit area rapidly, intuitively according to the quantity and the preloading arrangement mode that adopt in the weight of single box describe device and the whole construction, be convenient to the management of construction quality.
For the improving and replenishing of technique scheme, can increase following technical characterictic or its combination:
Described box describe device has opening, is filled with the preloading thing in it.Fill solid or liquid preloading thing according to the construction demand, convenient, flexible, more can gather materials on the spot, save the cost that the preloading thing is transported to the job site.
Described box describe device is a container.Because container itself is a kind ofly to have certain deadweight and container sturdy and durable, that be fit to transportation, and model various, purchase conveniently, the specification unanimity, be fit to stack, can be applied directly in the construction, be to need not a kind of desirable box describe device customized.Adopt waste and old container more cost-saved.
Carry out precompressed for the ground piecemeal in described the 3rd step.Because the ground situation complexity of construction is various, some ground need constitute according to moisture or ground, is divided into plurality of small blocks, carries out piecemeal according to actual conditions then and carries out the specific aim preloading.Adopt box describe device to carry out preloading simultaneously, certain preloading weight can be transported to the another one processing region from a processing region at the construction field (site) easily, reuse, save correspondingly that the carrying of a large amount of earth and stone materials is marched into the arena, tamps, excavated, construction cost such as compacting once more.Under the situation of the earth and stone material that adopts same cubic number, area that can the disposable Ground Treatment of corresponding minimizing is realized higher preloading height, increases the suffered pressure of unit area ground, thereby accelerates drainage speed, raising ground consolidation intensity.
On ground and base-material and/or base-material and box describe device, lay geotextiles in the described first step.If the water content of pending ground is bigger, then can select one or lay geotextiles or geo-grid simultaneously base-material upper and lower, a fixed gap that utilizes geotextiles or geo-grid itself to have can play the effect that can permeablely can isolate base-material again, avoid being absorbed in mud and/or isolate the box describe device of base-material and follow-up laying.
Described box describe device is vertically to stacking plural layer.Be convenient to according to construction requirement, adjust the preloading weight of ground unit area, to apply different pressure downwards.In the bearing strength of box describe device, can stack above 10 meters height, to satisfy the construction requirement that the high standard ground is handled.
Described a plurality of box describe devices middle part branch mailbox describes that device is vertically to stacking plural layer.Consider the unbalanced situation of the pending ground moisture content of large tracts of land, also can select the part box describe device on local ground, to stack, to accelerate the foundation drainage consolidation rate.
Described box describe device is that metal material manufacturing and its opening are arranged on end face.Can openings local or that all open wide, be convenient to utilize plant equipment with the material of filling, put into box describe device, improve efficiency of loading.Metal material guarantees its fastness, can hold heavier earth and stone material.
Described water discharge member is a sheet pile for draining water with depth measuring function.But owing to be provided with lead in the depth measurement drainage plate, can measure conductor length by measurement mechanism, thereby measure the degree of depth that water discharge member inserts moisture ground, guarantee to discharge moisture in the predetermined depth ground.
The present invention utilizes the weight of the preloading thing of the deadweight of box describe device and filling, formation can carry, transport for long-distance, be fit to stack, the preloading thing monomer of regular shape, can be according to the construction requirement of pending ground, carry out flexible combination, and reuse, reduced construction cost, efficiency of construction height, process clean, pollute little, the height of preloading improves and has realized the producing balanced forces of ground greatly, adopt the fixed ground high conformity of this method, the consolidation strength height is convenient to the preloading pressure of unit of account area exactly.
[description of drawings]
Fig. 1 is one of preloading structural representation of prior art;
Fig. 2 be prior art the preloading structural representation two;
Fig. 3 is the preloading structural representation of the embodiment of the invention.
Among the figure: 1, container, 2, earth and stone material, 3, base-material, 4, band drain, 5, ground.
[specific embodiment]
Below in conjunction with the specific embodiment substantive distinguishing features of the present invention is further described.
Embodiment one, and as shown in Figure 1, the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading comprises the steps:
The first step: according to condition of construction, on soft foundation 5, lay the base-material 3 that there are the particle gap in one or more layers sand, rubble, sand grains etc., some drainage grooves are set at foundation surface;
Second step: vertically plug the sheet pile for draining water with depth measuring function 4 that gos deep into ground, the band drain upper end is communicated with the formation drainage channel by base-material with the gutter;
The 3rd step: a plurality of container 1 planar alignment are become two layers, and preloading is carried out precompressed to ground on the earth and stone material layer;
The 4th step: container (determines according to ground situation and default force value) that after ground is exerted pressure certain hour ground moisture content oozes out the face of land and builds up, and by drainage channel ponding is discharged ground then, thereby makes foundation settlement fixed.
Require or but the duration arranges the preloading empty container or filled the container of earth and stone material 2 according to ground consolidation, perhaps the empty container or the container of having filled are stacked, thereby the preloading weight on unit of adjustment's area ground promotes the quick draining of ground, fixed flexibly.
Embodiment two, and the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading comprises the steps:
The first step: according to condition of construction, on moisture soft foundation 5, lay geotextiles, and then lay the base-material 3 that one or more layers sand, rubble, sand grains etc. have the particle gap, and on base-material, lay geotextiles again, at foundation surface some gutters are set then;
Second step: plug band drain 4 in ground, the band drain upper end is communicated with the gutter by base-material, forms drainage channel comprehensively;
The 3rd step: a plurality of containers 1 of having filled solid weighting material or water bag can local plural layer be arranged the ground preloading on the earth and stone material layer;
The 4th the step: the preloading thing is after ground is exerted pressure certain hour, and ground moisture content is built up on the face of land, then by drainage channel ponding is discharged ground, thereby make foundation settlement fixed.
Arrange on all or part of container, to continue to stack container empty or that fill solid weighting material or water bag according to ground consolidation requirement or duration, thus the preloading weight on the flexible unit of adjustment area ground, the quick draining of promotion ground, fixed.
Except container, also can select bigger, the firm cube container of other similar volume for box describe device, perhaps customized according to certain size.
For the filler in the box describe device, can be transported to the job site then filling in advance; After perhaps empty van being transported to the job site, filling at the scene even gather materials on the spot, treat that construction finishes, FCL is transported together with filler, and is convenient, fast, pollute for a short time, shortens the construction period, also can reuse, and cost is low.
But preloading will reach 5 layers van container on the ground of construction, like this integral body of preloading be cuboid and the height can be above 10 meters, the preloading pressure that ground bore of unit area can reach 10 tons/square metre, particularly is fit to the demanding construction requirement of ground consolidation.
When constructing for the container that on same ground, adopts some, can ground be divided into some according to actual conditions, utilize these containers earlier the plot base to be carried out fixed construction, then container is transported to another piece ground and repeats aforesaid construction sequence, the preloading of recycling container, need not to tamp construction sequences such as preloading, excavation, carrying, compacting preloading as the loose earth and stone material of preloading in the prior art, carrying, preloading step are only arranged, the purpose that can realize saving construction cost.
Above embodiment has embodied outstanding substantive distinguishing features of the present invention and obvious improvement, use needs according to reality, box describe device is carried out the modification of aspects such as material, specification and shape and the step of job practices is carried out additions and deletions, rearrangement, all in category of the present invention, be not limited to the content of enumerating of this manual, seldom give unnecessary details at this.
Claims (10)
1. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading is characterized in that comprising the steps: at least
The first step: go up laying at soft foundation (5) and have the base-material (3) in particle gap, and offer perimeter trench;
Second step: vertically plug the water discharge member that gos deep into ground;
The 3rd step: a plurality of box describe device planar alignment ground preloadings on base-material, are carried out precompressed to pending ground;
The 4th step: the ponding that oozes out the face of land is discharged ground.
2. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading according to claim 1 is characterized in that described box describe device has opening, is filled with the preloading thing in it.
3. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading according to claim 2 is characterized in that described box describe device is container (1).
4. according to the drainage consolidation construction method of claim 1 or 2 or 3 described treating soft soil foundation by container stacking loading, it is characterized in that carrying out precompressed for the ground piecemeal in described the 3rd step.
5. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading according to claim 4 is characterized in that laying geotextiles in the described first step on ground and base-material and/or base-material and box describe device.
6. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading according to claim 4 is characterized in that described box describe device is vertically to stacking plural layer.
7. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading according to claim 5 is characterized in that described box describe device is vertically to stacking plural layer.
8. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading according to claim 4 is characterized in that described a plurality of box describe devices middle part branch mailbox describes that device is vertically to stacking plural layer.
9. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading according to claim 2 is characterized in that described box describe device is that metal material manufacturing and its opening are arranged on end face.
10. the drainage consolidation construction method for the treatment of soft soil foundation by container stacking loading according to claim 4 is characterized in that described water discharge member is sheet pile for draining water with depth measuring function (4).
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| CN2010101636020A CN101824817B (en) | 2010-05-06 | 2010-05-06 | Drainage consolidation construction method for treating soft soil foundation by container stacking loading |
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| CN2010101636020A CN101824817B (en) | 2010-05-06 | 2010-05-06 | Drainage consolidation construction method for treating soft soil foundation by container stacking loading |
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| CN101824817B CN101824817B (en) | 2012-04-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061695A (en) * | 2010-12-09 | 2011-05-18 | 广东省航盛建设集团有限公司 | Treatment method of drainage pipe pile composite foundation |
| CN102733364A (en) * | 2012-07-18 | 2012-10-17 | 江苏省交通规划设计院股份有限公司 | Resource-saving recycling soft foundation prepressing system |
| CN103015399A (en) * | 2012-12-26 | 2013-04-03 | 中交四航工程研究院有限公司 | Earthquake disaster reduction system for liquefiable foundation and foundation treatment method |
| CN106948372A (en) * | 2017-04-14 | 2017-07-14 | 中建八局第建设有限公司 | A kind of passage precompressed construction technology |
| CN114086472A (en) * | 2021-10-27 | 2022-02-25 | 中铁第四勘察设计院集团有限公司 | Construction method for controlling post-construction settlement of frame bridge |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102061695A (en) * | 2010-12-09 | 2011-05-18 | 广东省航盛建设集团有限公司 | Treatment method of drainage pipe pile composite foundation |
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| CN103015399A (en) * | 2012-12-26 | 2013-04-03 | 中交四航工程研究院有限公司 | Earthquake disaster reduction system for liquefiable foundation and foundation treatment method |
| CN103015399B (en) * | 2012-12-26 | 2015-09-16 | 中交四航工程研究院有限公司 | The quake evaluation system of Liquefaction Foundation and method for processing foundation |
| CN106948372A (en) * | 2017-04-14 | 2017-07-14 | 中建八局第建设有限公司 | A kind of passage precompressed construction technology |
| CN106948372B (en) * | 2017-04-14 | 2019-03-01 | 中建八局第一建设有限公司 | A kind of channel precompressed construction technology |
| CN114086472A (en) * | 2021-10-27 | 2022-02-25 | 中铁第四勘察设计院集团有限公司 | Construction method for controlling post-construction settlement of frame bridge |
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|---|---|
| CN101824817B (en) | 2012-04-25 |
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Application publication date: 20100908 Assignee: Zhejiang Binwang Engineering Materials Co. Ltd. Assignor: Ren Zaiyong Contract record no.: 2015330000134 Denomination of invention: Drainage consolidation construction method for treating soft soil foundation by container stacking loading Granted publication date: 20120425 License type: Exclusive License Record date: 20150603 |
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Granted publication date: 20120425 Termination date: 20180506 |