CN103205971A - Construction method for adopting concrete breast board piles to support side slope with height difference of foundation pit - Google Patents
Construction method for adopting concrete breast board piles to support side slope with height difference of foundation pit Download PDFInfo
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- CN103205971A CN103205971A CN2012105462633A CN201210546263A CN103205971A CN 103205971 A CN103205971 A CN 103205971A CN 2012105462633 A CN2012105462633 A CN 2012105462633A CN 201210546263 A CN201210546263 A CN 201210546263A CN 103205971 A CN103205971 A CN 103205971A
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Abstract
The invention relates to a construction method for adopting concrete breast board piles to support a side slope with height difference of a foundation pit. The construction method includes: step 1, the concrete breast board piles are manufactured, anchor bars are embedded at the tops of the breast board piles, female grooves is arranged on one sides of the breast board piles, and seam allowances matched with the female grooves are arranged on the other sides of the breast board piles; step 2, a shallow foundation pit is excavated; step 3, a plurality of breast board piles are hung in supporting positions, the seam allowances on the breast board piles are inserted in the female grooves of the adjacent breast board piles, and the plurality of breast board piles forms a whole body and are fixed; step 4, cement mortar or fine stone concrete is poured in the female grooves; step 5, the anchor bars are welded onto a main reinforcement of a bottom plate in a foundation of the shallow foundation pit, the lower portions of the breast board piles are embedded in a soil layer, and the upper portions of the breast board piles, the lower portion of the foundation of the shallow foundation pit and the soil layer form into a whole body; and step 6, a deep foundation pit is excavated. The construction method is simple to construct and high in safety and has good comprehensive technical and economic benefits.
Description
Technical field
The present invention relates to foundation ditch difference of height slope retaining construction field, more particularly, relate to the job practices that a kind of foundation ditch difference of height side slope adopts concrete breast boards stake supporting.
Background technology
In the blast furnace engineering, piping lane deep foundation in the construction cast house behind the common body of the construction earlier basis, because blast-furnace body basis end absolute altitude is-4.2m, piping lane basis end absolute altitude is-7.5m, outside, basis clear distance only has 1.3m, the substrate discrepancy in elevation is bigger, for guaranteeing building and excavation slope safety, common way is that the native position of retaining is squeezed into rail in advance between piping lane and blast-furnace body basis, i iron or H shaped steel, spacing is 1.2～1.5m, limit earth excavation then, the limit breast boards that 3～6cm is thick is filled in retaining soil between the shaped steel stake, between transverse baffle and shaped steel, squeeze into chock, transverse slat is closely contacted with the soil body, but because transverse slat can not sealing, particularly higher for groundwater table, soil property is that layer of sand and dewatering construction difficulty are when big, often because of the soil erosion of foundation ditch top, cause in the building foundation soil body built on stilts and take place cubic metre of earth to cave in, superstructure destruction or differential settlement etc., easily cause peripheral ground to produce safe mass hidden danger such as sinking, need supporting to be reinforced repeatedly the cost height, engineering time is long and can't guarantee safety.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of easy construction, safe foundation ditch difference of height side slope to adopt the job practices of concrete breast boards stake supporting.
The technical solution adopted for the present invention to solve the technical problems is: construct the job practices that a kind of foundation ditch difference of height side slope adopts concrete breast boards stake supporting, may further comprise the steps:
S1 makes the stake of concrete breast boards, and the pre-buried dowel in the top of breast boards stake arranges female groove in a side of breast boards stake, in the rim of the mouth that the opposite side setting of breast boards stake cooperates with described female groove;
S2, excavation shallow foundation hole;
S3 hangs in the supporting position with the stake of polylith breast boards, and insert in female groove of adjacent breast boards stake in the rim of the mouth in the breast boards stake, and the stake of polylith breast boards forms whole and fixing;
S4, joints cement mortar or fine-stone concrete in female groove;
S5 is welded on dowel on the shallow foundation pit foundation plinth inner bottom plating master muscle, and the bottom of breast boards stake is imbedded in the soil layer, and breast boards stake top, shallow foundation pit foundation plinth bottom and soil layer form an integral body;
S6, deep pit excavation.
In job practices of the present invention, described female groove is the steel pipe of imbedding breast boards stake side, and the side of described steel pipe is jagged, is welded with the reinforcing bar anchor fluke on the described steel pipe.
In job practices of the present invention, described rim of the mouth is the "T"-shaped steel plate of imbedding breast boards stake side.
In job practices of the present invention, the top of described breast boards stake is equipped with the safe edge ironware.
Implement the job practices that foundation ditch difference of height side slope of the present invention adopts concrete breast boards stake supporting, have following beneficial effect:
1. the stake of polylith breast boards forms integral body by rim of the mouth, female groove connection after-pouring, the support strength height, and good seal performance, can effectively prevent seepage, solve a large amount of construction deep foundation supporting difficult problems behind the construction shallow foundations that need earlier, efficiently solved sand, silt, mud at the more shallow support pattern of groundwater table.
2. that drops in the work progress is mechanical less, and the construction plant that takies is little.The expense that construction according to said method takes place saves 70% than the supporting of shaped steel sheet pile, and has accelerated construction speed greatly, has shortened the high-risk activity durations such as support time, earthwork time effectively, has comprehensive technology economic benefit preferably.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the job practices schematic diagram that foundation ditch difference of height side slope of the present invention adopts concrete breast boards stake supporting;
Fig. 2 is that A-A among Fig. 1 is to sectional view;
Fig. 3 is the vertical view of breast boards stake;
Fig. 4 is that B among Fig. 3 is to local enlarged diagram.
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
Adopt among the job practices embodiment of concrete breast boards stake 2 supportings in foundation ditch difference of height side slope of the present invention, the shallow foundation hole is blast-furnace body basis 4, and end absolute altitude-4.2m, deep foundation ditch are cast house pipe trench basis 5, end absolute altitude-7.5m.As shown in Figure 1-Figure 3, job practices may further comprise the steps:
S1 makes concrete breast boards stake 2, the breast boards stake 2 tops pre-buried dowel 3 that keeps at a certain distance away.Side in breast boards stake 2 arranges female groove 9, and female groove 9 is for imbedding the steel pipe of breast boards stake 2 sides, and the side of steel pipe is jagged, and breach is welded with reinforcing bar anchor fluke 10 outwardly on the steel pipe.In the rim of the mouth 8 that the opposite side setting of breast boards stake 2 cooperates with female groove 9, rim of the mouth 8 is for imbedding the "T"-shaped steel plate of breast boards stake 2 sides.
S2, excavation shallow foundation hole is blast-furnace body basis 4.
S3 hangs in the supporting position with polylith breast boards stake 2, can pre-buried suspension ring 7, conveniently lifting in the breast boards stake 2.Insert in female groove 9 of adjacent breast boards stake 2 in rim of the mouth 8 in the breast boards stake 2, and polylith breast boards stake 2 forms whole and preliminary fixing.
S4, to female groove 9 interior joints cement mortar or fine-stone concretes, the stake 2 of polylith breast boards connects after-pourings by rim of the mouth 8, female groove 9 and forms integral body, and support strength height, and good seal performance can prevent effectively that quicksand, underground water and mud from flowing in the deep foundation ditch along the plate seam.
S5 is welded on dowel 3 on the shallow foundation pit foundation plinth inner bottom plating master muscle, and the bottom of breast boards stake 2 is imbedded in the soil layer, and safe edge ironware 6 is laid with anticollision in breast boards stake 2 tops.Breast boards stake 2 tops, shallow foundation pit foundation plinth bottom and soil layer form an integral body, all can guarantee supporting safety by calculating blast-furnace body basis 4 loads that pulling force that breast boards top dowel 3 bears and breast boards stake 2 bear to the lateral pressure of the vertical soil body, needn't worry because of the superstructure maintenance, flowing water pours the sorrow that foundation ditch causes future troubles such as foundation ditch landslide when raining, reduced the pattern foundation pit supporting structure monitoring and dropped into manpower and material resources.
S6, deep pit excavation is blast-furnace body basis 4.During the deep foundation ditch soil excavation, can directly vertically dig to piping lane and basic engineering absolute altitude by scheme, accelerate the construction speed of deep foundation ditch and single footing 1 greatly, guarantee blast furnace critical circuits normal construction.
Job practices of the present invention is to traditional supporting method important breakthrough, and the construction period is short, the efficient height, and effective, cost is low.Problems such as soil erosion, the substrate earthwork that runs in the successful solution conventional method construction is subsided, supporting is toppled have been guaranteed pattern foundation pit supporting structure safety, have shortened support time and earthwork time, have reduced construction cost.After adopting vertical breast boards stake 2, because breast boards stake 2 female grooves 9 all irritate tight with mortar, the sand layer can not extruded by the slave plate seam under the upper load pressurized, underground water can not flow out by the slave plate seam yet, globality, safety, the economy of supporting and protection structure have effectively been guaranteed, promotion and application widely are of great importance obvious social benefit to reducing the engineering construction cost.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (4)
1. the job practices of a foundation ditch difference of height side slope employing concrete breast boards stake supporting is characterized in that, may further comprise the steps:
S1 makes the stake of concrete breast boards, and the pre-buried dowel in the top of breast boards stake arranges female groove in a side of breast boards stake, in the rim of the mouth that the opposite side setting of breast boards stake cooperates with described female groove;
S2, excavation shallow foundation hole;
S3 hangs in the supporting position with the stake of polylith breast boards, and insert in female groove of adjacent breast boards stake in the rim of the mouth in the breast boards stake, and the stake of polylith breast boards forms whole and fixing;
S4, joints cement mortar or fine-stone concrete in female groove;
S5 is welded on dowel on the shallow foundation pit foundation plinth inner bottom plating master muscle, and the bottom of breast boards stake is imbedded in the soil layer, and breast boards stake top, shallow foundation pit foundation plinth bottom and soil layer form an integral body;
S6, deep pit excavation.
2. foundation ditch difference of height side slope according to claim 1 adopts the job practices of concrete breast boards stake supporting, it is characterized in that described female groove is the steel pipe of imbedding breast boards stake side, and the side of described steel pipe is jagged, is welded with the reinforcing bar anchor fluke on the described steel pipe.
3. foundation ditch difference of height side slope according to claim 1 adopts the job practices of concrete breast boards stake supporting, it is characterized in that described rim of the mouth is the "T"-shaped steel plate of imbedding breast boards stake side.
4. foundation ditch difference of height side slope according to claim 1 adopts the job practices of concrete breast boards stake supporting, it is characterized in that the top of described breast boards stake is equipped with the safe edge ironware.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210546263.3A CN103205971B (en) | 2012-12-14 | 2012-12-14 | Construction method for adopting concrete breast board piles to support side slope with height difference of foundation pit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210546263.3A CN103205971B (en) | 2012-12-14 | 2012-12-14 | Construction method for adopting concrete breast board piles to support side slope with height difference of foundation pit |
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| CN103205971A true CN103205971A (en) | 2013-07-17 |
| CN103205971B CN103205971B (en) | 2015-06-24 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709522Y (en) * | 2004-06-11 | 2005-07-13 | 岳毅 | Hydraulic spile pile device of water-resisting, concrete placing and seam sealing |
| KR20080061580A (en) * | 2006-12-28 | 2008-07-03 | 김형구 | Precast concrete file and method for constructing thereof |
| CN201883438U (en) * | 2010-12-23 | 2011-06-29 | 东南大学 | Pit-in-foundation-pit steel sheet pile foundation pit supporting structure |
| CN202164595U (en) * | 2011-06-28 | 2012-03-14 | 李尚� | Steel pipe pile and coffer made of steel pipe pile |
| CN102587388A (en) * | 2012-03-15 | 2012-07-18 | 十九冶成都建设有限公司 | PRM (press-anchor-restrict method) foundation pit supporting method |
-
2012
- 2012-12-14 CN CN201210546263.3A patent/CN103205971B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2709522Y (en) * | 2004-06-11 | 2005-07-13 | 岳毅 | Hydraulic spile pile device of water-resisting, concrete placing and seam sealing |
| KR20080061580A (en) * | 2006-12-28 | 2008-07-03 | 김형구 | Precast concrete file and method for constructing thereof |
| CN201883438U (en) * | 2010-12-23 | 2011-06-29 | 东南大学 | Pit-in-foundation-pit steel sheet pile foundation pit supporting structure |
| CN202164595U (en) * | 2011-06-28 | 2012-03-14 | 李尚� | Steel pipe pile and coffer made of steel pipe pile |
| CN102587388A (en) * | 2012-03-15 | 2012-07-18 | 十九冶成都建设有限公司 | PRM (press-anchor-restrict method) foundation pit supporting method |
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| CN103205971B (en) | 2015-06-24 |
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