CN109252433A - Method soft soil foundation intensive treatment construction and reinforce soft soil foundation foundation pit - Google Patents
Method soft soil foundation intensive treatment construction and reinforce soft soil foundation foundation pit Download PDFInfo
- Publication number
- CN109252433A CN109252433A CN201810936973.4A CN201810936973A CN109252433A CN 109252433 A CN109252433 A CN 109252433A CN 201810936973 A CN201810936973 A CN 201810936973A CN 109252433 A CN109252433 A CN 109252433A
- Authority
- CN
- China
- Prior art keywords
- foundation
- soft soil
- foundation pit
- water penetration
- soil foundation
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- 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
- 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
- E02D3/106—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by forming sand drains containing only loose aggregates
-
- 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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Abstract
The invention discloses a kind of soft soil foundation intensive treatment constructions, it is characterized in that: including multiple # shape roads, multiple # font roads are separated out multiple foundation pit regions, and the position of close road has set water penetration pile in foundation pit, inserted with steel reinforcement cage in water penetration pile, and it is filled with permeable celluar concrete.Soft soil foundation intensive treatment construction improves tubular pole shear resistance, simplifies excavation of foundation pit and strengthening construction process, saving construction period and material cost.Provide the method that soft soil foundation foundation pit is reinforced using above-mentioned soft soil foundation intensive treatment construction.The technical effects of the invention are that: together with directly basement process, reinforcing are effectively combined with excavation of foundation pit, permeable celluar concrete after water penetration pile and solidification stays in the soil body together, the common bearing capacity for strengthening the soil body, the soil body is set quickly to be strengthened, the shear resistance for enhancing water penetration pile simultaneously, can be used as fender post and plays the role of earth-retaining sealing, the problem for effectively preventing setting cast-in-situ bored pile hardly possible, excavation of foundation pit and strengthening construction process are simplified, construction period and material cost are saved.
Description
Technical field
The present invention relates to a kind of methods soft soil foundation intensive treatment construction and reinforce soft soil foundation foundation pit.
Background technique
With the rapid development of China's southeastern coast economic construction, population is also increased, and is increasingly increased to Land Demand.
Tianjin, Jiangsu, Guangdong and Zhejiang etc. are coastal, and all once a wide range of reclaiming land around sea, these areas were mostly Muddy Bottoms class weak soil.Have
Water content height, the structural feature that poor permeability, intensity is low, hole is big, low-density and tool are certain, and it is distributed often not
Uniformly.By taking the coastal industrial zone in Wenzhou as an example, it is in flow regime that soil strength is low, high sensitivity, moisture content is high, compressibility is high,
It is typical soft soil foundation.Since initial strength is low, large-scale construction equipment is difficult to march into the arena, and excavation of foundation pit cost is high, construction
Long in time limit, posterior settlement is big.These are all that engineering increases huge difficulty.In order to meet construction requirement, a series of soft soil foundations
Processing method is suggested, such as vacuum method, vacuum pre-pressed joint electric osmose, vacuum pre-pressed joint chemical reagent, vacuum preloading
Combined stack-load etc., these methods have certain effect in terms of handling weak soil, therefore are widely used.But it is true
Empty pre-pressed joint electro-osmosis method because its consume energy it is larger can not large-area applications, and vacuum pre-pressed joint chemical-agent technique has certain dirt
Dye, the cost of vacuum combined stack-load method is again higher, thus in Practical Project using it is more be more economical vacuum method.
However, occurring the undesirable phenomenon of consolidation effect often due to the drain bar generation silting in vacuum preloading.In addition,
These method for processing foundation all use plastic draining board to transmit vacuum load and as drainage channel, are retained in after treatment
In the soil body, it is difficult to cast-in-situ bored pile is used, stake holes deflection is easily caused, and the shear resistance of prefabricated tubular pile is poor, it is difficult to as side slope
Maintaining pile, excavation of foundation pit difficulty are huge.
Summary of the invention
In view of the deficiency of background technique, technical problem to be solved by the invention is to provide one kind can be improved tubular pole shearing resistance
Ability simplifies excavation of foundation pit and strengthening construction process, the soft soil foundation intensive treatment for saving construction period and material cost
Construction and the method for reinforcing soft soil foundation foundation pit.
For this purpose, the present invention is to adopt the following technical scheme that realize:
A kind of soft soil foundation intensive treatment construction, it is characterized in that: including multiple # font roads, multiple # font roads separate
Multiple foundation pit regions out, the position in foundation pit close to road have set water penetration pile, inserted with steel reinforcement cage in water penetration pile, and are filled with
Permeable celluar concrete.
A method of it is constructed using claim 1 soft soil foundation intensive treatment and reinforces soft soil foundation foundation pit, it is special
Sign is: the following steps are included:
Step 1: # font road is laid with using compacting and landfill microlith layer first within the scope of soft soil foundation；It (please provide
The method that road is formed)
Step 2: the water penetration pile with through-hole is set in the rectangular processing region that # font road is separated to form, in water penetration pile
It is inside initially charged with steel reinforcement cage, refills permeable celluar concrete, and permeable celluar concrete is waited to solidify；
Step 3: the blocking with drinking-water pipe is set in water penetration pile upper end, blocking closes the upper end of water penetration pile, and the drinking-water pipe passes through
Pipeline is connect with exhaust device, and covering geotextiles and sealing film, open exhaust device above the soil body of the rectangular processing region
Carry out pump drainage processing；
Step 4: carrying out excavation of foundation pit, carries out amputation and levelling to the permeable tubular pole for being higher than foundation pit in digging process.
It is synchronized in the step 2 and sets drain bar, drain bar is connect with exhaust device in the step 3, drain bar
Pump drainage is carried out jointly with water penetration pile.
The permeable celluar concrete includes that aggregate, cement, reinforcing agent and water mixing are formed.
The technical effects of the invention are that: together with being directly effectively combined basement process, reinforcing with excavation of foundation pit, thoroughly
Permeable celluar concrete after water stake and solidification stays in the soil body together, the common bearing capacity for strengthening the soil body, keep the soil body quick
To reinforcing, while the shear resistance of water penetration pile is enhanced, can be used as fender post and play the role of earth-retaining sealing, effectively prevents beating
If the problem of cast-in-situ bored pile hardly possible, excavation of foundation pit and strengthening construction process are simplified, saves construction period and material cost.
Detailed description of the invention
The present invention has following attached drawing:
Structural schematic diagram before Fig. 1 excavation of foundation pit of the present invention；
Fig. 2 is the structural schematic diagram after excavation of foundation pit of the present invention；
Fig. 3 is the top view after excavation of foundation pit of the present invention；
Fig. 4 is top view before excavation of foundation pit.
Specific embodiment
Referring to Fig.1 shown in -4, a kind of soft soil foundation intensive treatment construction provided by the invention, including multiple # fonts road
Road 1, multiple # font font roads 1 are separated out multiple 2 regions of foundation pit, and the position of close road has set water penetration pile 3 in foundation pit 2
With drain bar 7, waterproof stake 8 is set around entire treatment region, inserted with steel reinforcement cage in waterproof stake 8, and be filled with concrete
4。
The present invention also provides a kind of soft soil foundation intensive treatments to construct the method for reinforcing soft soil foundation foundation pit, including
Following steps:
Step 1: using tamping and filling microlith layer laying # font road 1 first within the scope of soft soil foundation, place is utilized
Surrounding buildings rubbish or sandstone around the soft base place laying construction road, soft soil foundation is divided into several faces
The roughly equal region of product determines, the region shape split is regular as far as possible with specific reference to soft soil foundation shape, it is therefore an objective to
Facilitate piling and vacuum preloading to operate, and road is tamped using excavator, it is ensured that piling machine being capable of operation；
Step 2: the water penetration pile 3 with through-hole is set in the rectangular processing region that # font road 1 is separated to form, permeable
It is initially charged with steel reinforcement cage in stake 3, refills permeable celluar concrete, and permeable celluar concrete is waited to solidify；Water penetration pile can be
It plays a role in the drainage when vacuumizing, while setting the waterproof stake 8 of a circle around soft soil foundation processing region, when vacuumizing,
It can prevent the outer water for the treatment of region from penetrating into, guarantee treatment region vacuum degree；
Step 3: the blocking with drinking-water pipe is set in 3 upper end of water penetration pile, blocking closes the upper end of water penetration pile, so that water penetration pile 3
It can play a role in the drainage, drain bar is connect also by pipeline with exhaust device.The drinking-water pipe passes through pipeline and exhaust device
Connection, the soil body top covering geotextiles 5 and sealing film 6 of rectangular processing region, opens exhaust device progress pump drainage processing；
Step 4: after pump drainage, water in water penetration pile 3 being extracted out, and waterproof stake 8 is put into steel reinforcement cage, refills concrete 4, and
Concrete 4 is waited to solidify；Foundation pit 2 is carried out again to excavate, and after the completion of excavation, the permeable tubular pile head for being higher than foundation pit is cut, is cut
Preceding survey crew first carries out the measurement of the level, releases actual stake top absolute altitude.Waterproof stake 8 at this time can be used as fender post use, nothing
Fender post need to be set again.
In the above-described embodiments, in order to further enhance effect: can be synchronized in step 2 and set drain bar 7, in step 3
Middle drain bar 7 is connect with exhaust device, and drain bar 7 and water penetration pile 3 carry out pump drainage jointly, permeable celluar concrete 4 include aggregate,
Cement, reinforcing agent and water mixing are formed.
In the present embodiment, together with being directly effectively combined with excavation of foundation pit basement process, reinforcing, 3 row of water penetration pile
Water plate 7 stays in the soil body together, and the common bearing capacity for strengthening the soil body makes the soil body quickly be strengthened, waterproof stake 8 can be in pump drainage
Period plays sealing function, and foundation pit exploitation period plays earth-retaining sealing effect, no longer needs to separately set fender post, the reinforcing bar in stake
Cage concrete enhances the shear resistance of waterproof stake while effectively preventing setting the problem of cast-in-situ bored pile hardly possible, simplifies base
Hole is excavated and strengthening construction process, saves construction period and material cost.
Claims (4)
1. a kind of soft soil foundation intensive treatment construction, it is characterized in that: including multiple # font roads, multiple # font roads point
Multiple foundation pit regions are separated out, the position of close road has set water penetration pile in foundation pit, and water penetration pile is interior inserted with steel reinforcement cage, and fills
There is permeable celluar concrete.
2. a kind of construct the method for reinforcing soft soil foundation foundation pit, feature using claim 1 soft soil foundation intensive treatment
It is: the following steps are included:
Step 1: # font road is laid with using landfill and compacting microlith layer first within the scope of soft soil foundation；
Step 2: the water penetration pile with through-hole is set in the rectangular processing region that # font road is separated to form, in water penetration pile
It is inside initially charged with steel reinforcement cage, refills permeable celluar concrete, and permeable celluar concrete is waited to solidify；
Step 3: the blocking with drinking-water pipe is set in water penetration pile upper end, blocking closes the upper end of water penetration pile, it is therefore an objective to prevent from taking out true
In null process, the gas leakage of water penetration pile upper end causes vacuum degree to decline, and the drinking-water pipe is connect by pipeline with exhaust device, the side
Covering geotextiles and sealing film, open exhaust device and carry out pump drainage processing above the soil body of shape processing region；
Step 4: carrying out excavation of foundation pit, after the completion of excavation, cuts to the permeable tubular pile head for being higher than foundation pit, measures people before cutting
Member first carries out the measurement of the level, releases actual stake top absolute altitude.
3. according to claim 2 reinforce soft soil foundation base using claim 1 soft soil foundation intensive treatment construction
The method in hole sets drain bar it is characterized in that: synchronizing in the step 2, and drain bar and exhaust device connect in the step 3
It connects, drain bar and water penetration pile carry out pump drainage jointly.
4. according to claim 2 or 3 reinforce soft soil foundation using claim 1 soft soil foundation intensive treatment construction
The method of foundation pit, it is characterized in that: the permeable celluar concrete includes that aggregate, cement, reinforcing agent and water mixing are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810936973.4A CN109252433A (en) | 2018-08-16 | 2018-08-16 | Method soft soil foundation intensive treatment construction and reinforce soft soil foundation foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810936973.4A CN109252433A (en) | 2018-08-16 | 2018-08-16 | Method soft soil foundation intensive treatment construction and reinforce soft soil foundation foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109252433A true CN109252433A (en) | 2019-01-22 |
Family
ID=65050243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810936973.4A Pending CN109252433A (en) | 2018-08-16 | 2018-08-16 | Method soft soil foundation intensive treatment construction and reinforce soft soil foundation foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109252433A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820716A (en) * | 2019-12-06 | 2020-02-21 | 山西机械化建设集团有限公司 | Method for dynamic compaction composite treatment of mucky soil foundation by gravel pile, drainage plate and upper filling body |
| CN111519484A (en) * | 2020-04-15 | 2020-08-11 | 中电建路桥集团有限公司 | Highway soft foundation treatment structure and construction method |
| CN112112151A (en) * | 2020-09-04 | 2020-12-22 | 山西华晋岩土工程勘察有限公司 | Foundation reinforcement treatment method |
| CN112227122A (en) * | 2020-08-29 | 2021-01-15 | 天津鑫路桥建设工程有限公司 | Roadbed reinforcing structure and construction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020081507A (en) * | 2001-04-18 | 2002-10-28 | 최귀봉 | Paper drain board building method and stitcher for more double hole |
| CN102505597A (en) * | 2011-09-13 | 2012-06-20 | 青岛理工大学 | Novel system for treating soft foundation of high-speed railway |
| CN102704488A (en) * | 2012-04-24 | 2012-10-03 | 王军 | Novel soft soil foundation pit excavation method |
| CN103074883A (en) * | 2013-01-11 | 2013-05-01 | 温州大学 | Active type preloading combined foundation reinforcing method |
| CN103628468A (en) * | 2013-12-24 | 2014-03-12 | 山东大学 | Foundation treatment method adopting water penetration pile in combination with vacuum preloading |
-
2018
- 2018-08-16 CN CN201810936973.4A patent/CN109252433A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| KR20020081507A (en) * | 2001-04-18 | 2002-10-28 | 최귀봉 | Paper drain board building method and stitcher for more double hole |
| CN102505597A (en) * | 2011-09-13 | 2012-06-20 | 青岛理工大学 | Novel system for treating soft foundation of high-speed railway |
| CN102704488A (en) * | 2012-04-24 | 2012-10-03 | 王军 | Novel soft soil foundation pit excavation method |
| CN103074883A (en) * | 2013-01-11 | 2013-05-01 | 温州大学 | Active type preloading combined foundation reinforcing method |
| CN103628468A (en) * | 2013-12-24 | 2014-03-12 | 山东大学 | Foundation treatment method adopting water penetration pile in combination with vacuum preloading |
Non-Patent Citations (1)
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| 张巨松主编: "《混凝土学》", 30 June 2017, 哈尔滨工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820716A (en) * | 2019-12-06 | 2020-02-21 | 山西机械化建设集团有限公司 | Method for dynamic compaction composite treatment of mucky soil foundation by gravel pile, drainage plate and upper filling body |
| CN111519484A (en) * | 2020-04-15 | 2020-08-11 | 中电建路桥集团有限公司 | Highway soft foundation treatment structure and construction method |
| CN111519484B (en) * | 2020-04-15 | 2021-11-30 | 中电建路桥集团有限公司 | Highway soft foundation treatment structure and construction method |
| CN112227122A (en) * | 2020-08-29 | 2021-01-15 | 天津鑫路桥建设工程有限公司 | Roadbed reinforcing structure and construction method |
| CN112112151A (en) * | 2020-09-04 | 2020-12-22 | 山西华晋岩土工程勘察有限公司 | Foundation reinforcement treatment method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190122 |
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| RJ01 | Rejection of invention patent application after publication |