CN104088268A - Construction method for handling soft soil foundation through light well point precipitation and dynamic compaction replacement method - Google Patents
Construction method for handling soft soil foundation through light well point precipitation and dynamic compaction replacement method Download PDFInfo
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- CN104088268A CN104088268A CN201410352383.9A CN201410352383A CN104088268A CN 104088268 A CN104088268 A CN 104088268A CN 201410352383 A CN201410352383 A CN 201410352383A CN 104088268 A CN104088268 A CN 104088268A
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Abstract
Disclosed is a construction method for handling a soft soil foundation through a light well point precipitation and dynamic compaction replacement method. The construction method is technically characterized by comprising the steps that firstly, plastic drainage plates are arranged in a handling area as a drainage channel and a point precipitation channel, the plastic drainage plates penetrate through the bottom of a sludge layer, the drainage channel is vertical, the drainage channel and the point precipitation channel are arranged at the same time, single-row precipitation pipes and dual-row precipitation pipes are adopted in the point precipitation channel at the same time, a ram pit is filled with materials while the point precipitation channel is handled, and a replacement pier which achieves the function of a composite foundation is formed; then, dynamic compaction replacement construction is carried out after the well point precipitation channel is arranged, the dynamic compaction replacement construction is carried out two times, the single-row precipitation pipes are pulled out before the first time of dynamic compaction replacement in the process of carrying out dynamic compaction replacement construction two times, and the dual-row precipitation pipes are pulled out after the first time of dynamic compaction replacement is finished to carry out the second time of dynamic compaction replacement; finally, the foundation is detected after 14 days of flattening and compaction, and foundation handling is completed after the foundation is detected. According to the technical scheme, the construction period is obviously shortened, and the foundation handling bearing capacity is high.
Description
Technical field
The present invention relates to foundation construction method and technology field, particularly Application of light well point precipitation adds strong rammer method of replacing soft soil foundation construction method.
Background technology
Existing soft soil foundation construction method, preloading area is larger, the piling prepressing dead load time is 3 months, add backfill and unloading 1 month, need the time of 4 months, after unloading, carrying out soft soil foundation construction PROCESS FOR TREATMENT needs the time of 2 months, so, the time that existing technique one-period is 6 months, therefore, long construction period.
Summary of the invention
In order to address the above problem, to the invention provides Application of light well point precipitation and add strong rammer method of replacing soft soil foundation construction method.
Application of light well point precipitation adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: first, arrange drainage channel and point dewatering passage, secondly, after arranging well-points dewatering passage, carry out dynamic replacement construction, after dynamic replacement construction, carry out cape rammer construction, last, carry out ground detection, ground completes ground and processes after detecting.
Further, described drainage channel is band drain.
Layout points precipitation passage when further, arranging drainage channel.
Further, described point dewatering passage is for adopt single downcomer and double downcomer simultaneously.
Further, when processing well-points dewatering passage, to filler in tamping pit, form the displacement pier that plays composite foundation effect.
Further, described dynamic replacement construction minute is carried out for twice.
Further, before described dynamic replacement construction minute twice ongoing first pass dynamic replacement, extract single downcomer, complete and extract double downcomer after first pass dynamic replacement and carry out again dynamic replacement second time.
Further, described drainage channel is vertical drainage passage.
Further, described band drain is plastic draining board.
Advantage of the present invention:
1, construction period obviously shortens;
2, ground processing bearing capacity is high;
3, save labour cost and mechanical correlative charges.
Accompanying drawing explanation
Fig. 1 is construction process simplified schematic diagram of the present invention.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated; Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1
Application of light well point precipitation adds strong rammer method of replacing soft soil foundation construction method, first, arrange drainage channel and point dewatering passage, point dewatering passage is for adopt single downcomer and double downcomer simultaneously, secondly, after arranging well-points dewatering passage, carry out dynamic replacement construction, when processing well-points dewatering passage, to filler in tamping pit, form the displacement pier that plays composite foundation effect, after dynamic replacement construction, carry out cape rammer construction, finally, carry out ground detection, ground completes ground and processes after detecting.
Embodiment 2
Application of light well point precipitation adds strong rammer method of replacing soft soil foundation construction method, first, at processing region, arrange that plastic draining board is drainage channel and point dewatering passage, plastic draining board penetrates mud bottom, drainage channel is vertical drainage passage, layout points precipitation passage when arranging drainage channel, point dewatering passage is for adopt single downcomer and double downcomer simultaneously, in the time of process points precipitation passage to filler in tamping pit, the displacement pier of composite foundation effect is played in formation, displacement pier requires to penetrate mud bottom, average length is 4m-6m, for thicker 3 meters, Xian Jiang top layer, the region mud of mud, excavate and change sand, every all over hitting in close process the silt displacement of swelling between ramming, guarantee that at 5m, take interior after replacement completion is the composite foundation of sand and displacement pier, plastic draining board is arranged between displacement pier, at the bottom of drainage plate striking, absolute altitude is as the criterion to penetrate mud, when band drain, get to when former mud face cannot continue to insert and can stop setting, secondly, after arranging well-points dewatering passage, carry out dynamic replacement construction, dynamic replacement construction minute is carried out for twice, before dynamic replacement construction minute twice ongoing first pass dynamic replacement, extract single downcomer, complete and extract double downcomer after first pass dynamic replacement and carry out again dynamic replacement second time, first pass hits when close, single row of tubes is pulled out, adopt 1.2 meters～1.5 meters, hammer footpath, the displacement hammer of the heavy 15T of hammer left and right hits close, hit close dot spacing 2.5m, first pass strong rammer energy 1500KN.m～2000KN.m, hit for every 10, until after two hit settling amount sum and be less than 25cm, second time Application of light well point precipitation adds strong rammer method of replacing soft soil foundation construction technology energy 2000KN.m～3000KN.m, hit for every 10～12, until after two hit settling amount sum and be less than 10cm, after dynamic replacement construction, carry out cape rammer construction, first pass hits close front water level and is down to below 3 meters, and keep one day, displacement is hit after close end, on top layer, carry out full rammer one time, energy 1000KN.m, every two is hit, overlap joint 1/4 hammer footpath, improve the bearing capacity of shallow-layer, finally, ground detection is carried out in smooth compacting after 14 days, ground completes ground and processes after detecting.
The water that scene falls out enters peripheral open drain, and the water of peripheral open drain should be discharged in time, prevents from down oozing circulation.
Precipitation is answered 24 hours continuing precipitations after starting to start, and if any device damage, changes in time, water-level observation hole is set, two water level peep holes are set in region, carry out water level observed and recorded every day, if any the timely analyze and solve of abnormal conditions, wherein tube sealing is until the last complete dismounting of strong rammer.
Claims (9)
1. Application of light well point precipitation adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: first, arrange drainage channel and point dewatering passage, secondly, after arranging well-points dewatering passage, carry out dynamic replacement construction, after dynamic replacement construction, carry out cape rammer construction, last, carry out ground detection, ground completes ground and processes after detecting.
2. Application of light well point precipitation according to claim 1 adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: described drainage channel is band drain.
3. Application of light well point precipitation according to claim 1 adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: layout points precipitation passage when arranging drainage channel.
4. Application of light well point precipitation according to claim 1 adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: described point dewatering passage is for adopt single downcomer and double downcomer simultaneously.
5. Application of light well point precipitation according to claim 1 adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: when processing well-points dewatering passage, to filler in tamping pit, form the displacement pier that plays composite foundation effect.
6. Application of light well point precipitation according to claim 1 adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: described dynamic replacement construction minute is carried out for twice.
7. Application of light well point precipitation according to claim 6 adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: before described dynamic replacement construction minute twice ongoing first pass dynamic replacement, extract single downcomer, complete and extract double downcomer after first pass dynamic replacement and carry out again dynamic replacement second time.
8. Application of light well point precipitation according to claim 1 adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: described drainage channel is vertical drainage passage.
9. Application of light well point precipitation according to claim 1 adds strong rammer method of replacing soft soil foundation construction method, it is characterized in that: described band drain is plastic draining board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410352383.9A CN104088268A (en) | 2014-07-23 | 2014-07-23 | Construction method for handling soft soil foundation through light well point precipitation and dynamic compaction replacement method |
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| CN201410352383.9A CN104088268A (en) | 2014-07-23 | 2014-07-23 | Construction method for handling soft soil foundation through light well point precipitation and dynamic compaction replacement method |
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| CN104088268A true CN104088268A (en) | 2014-10-08 |
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| CN201410352383.9A Pending CN104088268A (en) | 2014-07-23 | 2014-07-23 | Construction method for handling soft soil foundation through light well point precipitation and dynamic compaction replacement method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674782A (en) * | 2014-11-04 | 2015-06-03 | 郑鲁平 | Foundation processing method based on sand well dynamic compaction composition of muddy soft soil |
| CN110761264A (en) * | 2019-10-18 | 2020-02-07 | 中国有色金属工业昆明勘察设计研究院有限公司 | Secondary dynamic compaction gravel replacement and reinforcement method for coastal sludge soft soil foundation |
| CN111676750A (en) * | 2020-06-10 | 2020-09-18 | 厦门中平公路勘察设计院有限公司 | Roadbed treatment method based on vacuum dewatering and dynamic compaction |
| CN112030936A (en) * | 2020-09-04 | 2020-12-04 | 中交天航滨海环保浚航工程有限公司 | Construction method for treating soft soil foundation of hydraulic reclamation project |
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| WO2010108433A1 (en) * | 2009-03-25 | 2010-09-30 | 上海港湾软地基处理工程(集团)有限公司 | Improved treating method of soft soil foundation combined with high vacuum densification |
| CN102116019A (en) * | 2009-12-31 | 2011-07-06 | 上海港湾软地基处理工程(集团)有限公司 | Method for rapidly treating soft foundation through high vacuum densification |
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2014
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| CN1584221A (en) * | 2004-06-16 | 2005-02-23 | 周健 | Superficial soft soil foundation rapid dynamic solidifying technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674782A (en) * | 2014-11-04 | 2015-06-03 | 郑鲁平 | Foundation processing method based on sand well dynamic compaction composition of muddy soft soil |
| CN110761264A (en) * | 2019-10-18 | 2020-02-07 | 中国有色金属工业昆明勘察设计研究院有限公司 | Secondary dynamic compaction gravel replacement and reinforcement method for coastal sludge soft soil foundation |
| CN111676750A (en) * | 2020-06-10 | 2020-09-18 | 厦门中平公路勘察设计院有限公司 | Roadbed treatment method based on vacuum dewatering and dynamic compaction |
| CN112030936A (en) * | 2020-09-04 | 2020-12-04 | 中交天航滨海环保浚航工程有限公司 | Construction method for treating soft soil foundation of hydraulic reclamation project |
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