CN104032732A - Cast-in-place type prestress steel plate concrete pile, construction method thereof and support pile wall - Google Patents
Cast-in-place type prestress steel plate concrete pile, construction method thereof and support pile wall Download PDFInfo
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Abstract
The invention discloses a cast-in-place type prestress steel plate concrete pile, a construction method thereof and a support pile wall. The cast-in-place type prestress steel plate concrete pile comprises a hollow outer shell which is made of steel plates, concrete which is formed in the hollow outer shell in a cast-in-place mode, and a plurality of prestressed tendons which are arranged in the concrete. The upper end of the hollow outer shell is opened, and the bottom end of the hollow outer shell is of a closed structure. The construction method of the cast-in-place type prestress steel plate concrete pile and the support pile wall which is provided with the cast-in-place type prestress steel plate concrete pile are further included. By the adoption of the mode, the cast-in-place type prestress steel plate concrete pile can be fabricated on site according to design requirements, the disadvantages caused by pile body spreading and transporting are avoided, transportation cost is saved, on the premise that the safety and reliability of a foundation pit support are guaranteed, engineering cost can be lowered, and construction is convenient.
Description
Technical field
The present invention relates to all construction projects fields such as building, municipal administration, traffic, water conservancy, electric power, industry, particularly relate to a kind of Cast-in-situs type pre-stressed steel plate concrete pile and construction method thereof and supporting piling wall.
Background technology
Base pit engineering technical scheme is mainly considered from aspects such as security reliability, economic rationality, difficulty of construction, construction periods.Many to the application of the stake of SMW engineering method, castinplace pile, diaphragm wall in China coast periphery soft clay area.
Shaped steel Soil-cement Wall, is commonly referred to SMW engineering method, is a kind of compound gear soil waterproof structure that shaped steel forms that inserts in the triaxial cement mixing pile of socket continuously.Utilize three axle agitation pile rigs to cut earth in former stratum, rig leading portion low pressure is injected cement grout simultaneously, fully stir and form the cement earth pile row formula barricade that water-resisting property is higher with the chopping soil body, before cement grout not yet hardens, insert a kind of Construction Technique of Underground Works of shaped steel.The stake of SMW engineering method grows up based on Deep Mixing Pile Construction, and this structure has been given full play to the mechanical characteristic of cement-soil mixture and shaped steel, there is economy, the duration is short, water-resisting property is strong, to features such as surrounding environment influence are little.Shaped steel Soil-cement Wall enclosed structure, after basement construction completes, can be extracted H shaped steel from cement mixing method, reaches the object that reclaims and again utilize.Therefore this engineering method compared with conventional maintenance form not only the duration short, work progress is pollution-free, place clean and tidy clean, noise is little, and can save social resources, avoids safeguarding that body forever leaves in underground after basement construction, becomes underground obstacle.Build a conservation-minded society in promotion, realize today of sustainable development, apply this engineering method and more there is realistic meaning.
But there is following shortcoming in the stake of SMW engineering method: in the stake of SMW engineering method, mostly use H shaped steel, the cost of H shaped steel is high, and in actual construction work use procedure, the freight of shaped steel and lease expenses are all very high, especially, in the situation that the duration is grown, the lease expenses of shaped steel can increase use cost greatly.Shaped steel, generally after basement construction finishes, need to be pulled out in addition, may cause shaped steel bending, break equal loss, in the time that place restriction cannot be extracted, can greatly increase again engineering cost.
The reinforcing bar of castinplace pile and concrete consumption are more, also need to arrange in addition water-stop curtain, construct more loaded down with trivial details, larger on the impact of environment.
Therefore, supporting and protection structure used in existing architecture Foundation Pit Engineering can't meet engineering demand completely, need to develop a kind of novel foundation pit supporting construction, safe and reliable, economical rationality, easy construction.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of Cast-in-situs type pre-stressed steel plate concrete pile and construction method and supporting piling wall, Cast-in-situs type pre-stressed steel plate concrete pile used can be according to designing requirement field fabrication, avoid pile body spreading and transported bring unfavorable, save cost of transportation, ensureing under the safe and reliable prerequisite of pattern foundation pit supporting structure, can reduce engineering cost, and easy construction.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of Cast-in-situs type pre-stressed steel plate concrete pile is provided, comprise: the hollow casing body that formed by steel plate, at the inner cast-in-place layer of concrete forming of described hollow casing body be arranged on many presstressed reinforcing steels in described layer of concrete, the upper end open of described hollow casing body, bottom is enclosed construction.
In a preferred embodiment of the present invention, the cross section of described hollow casing body is dumbbell shape, comprises top flange, bottom flange and is arranged on the web between described top flange, bottom flange.
In a preferred embodiment of the present invention, described top flange, bottom flange and web are all rectangle, and described top flange and bottom flange be arranged in parallel, and described web is vertical with top flange to be arranged.
In a preferred embodiment of the present invention, described top flange and bottom flange are rectangle, and described web comprises two symmetrically arranged indent circular arc steel plates.
In a preferred embodiment of the present invention, described presstressed reinforcing steel is arranged in top flange and bottom flange, and presstressed reinforcing steel in presstressed reinforcing steel and bottom flange in top flange is symmetrical arranged.
In a preferred embodiment of the present invention, described presstressed reinforcing steel comprise with concrete tight bond have adhesive section and expose concrete without adhesive section.
In a preferred embodiment of the present invention, the bottom of described hollow casing body is pyramid enclosed construction.
The present invention also provides the construction method of above-mentioned Cast-in-situs type pre-stressed steel plate concrete pile, comprises following concrete steps:
A, in described hollow casing body inner side, one template is set, in described template, there are multiple conduits that match with presstressed reinforcing steel position;
B, employing cement-soil stirring pile construction machinery are constructed, and form cement mixing method;
C, hollow casing body is put into cement mixing method together with template, and put into respectively presstressed reinforcing steel in each conduit;
D, from hollow casing body upper end open to its inner concreting, template and conduit in concreting process upwards promote, when concreting completes, template and conduit are also extracted completely.
In a preferred embodiment of the present invention, in steps d, template and conduit upwards promote by bobbing machine.
The present invention also provides a kind of supporting piling wall with above-mentioned Cast-in-situs type pre-stressed steel plate concrete pile, and described supporting piling wall comprises several cement mixing methods and is arranged on the Cast-in-situs type pre-stressed steel plate concrete pile in described cement mixing method.
The present invention has following beneficial effect:
1, Cast-in-situs type pre-stressed steel plate concrete pile of the present invention, can be according to designing requirement, and the trouble of pile body spreading has been avoided in cast in situs in cement mixing method, has reduced cost of transportation.
2, compared with bored pile, Cast-in-situs type pre-stressed steel plate concrete pile of the present invention, the reinforcing bar adopting and concrete consumption are few, cost-saving, and little to ambient influnence.
3,, compared with the stake of SMW engineering method, Cast-in-situs type pre-stressed steel plate concrete pile of the present invention, with respect to shaped steel, has increased intensity, has reduced cost of transportation, and does not need to pull out, avoided engineering to complete after the loss problem of pulling out of shaped steel.
4, supporting piling wall of the present invention, adopts Cast-in-situs type pre-stressed steel plate concrete pile, has good bending rigidity, and supporting intensity is high.
In sum, Cast-in-situs type pre-stressed steel plate concrete pile of the present invention and construction method thereof and supporting piling wall, ensure the safe and reliable of foundation pit supporting construction, there is again good economic benefit, easy construction, ambient influnence is little, has further met the demand that base pit engineering is built.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing, wherein:
Fig. 1 is the cross section structure schematic diagram one of described Cast-in-situs type pre-stressed steel plate concrete pile;
Fig. 2 is the cross section structure schematic diagram two of described Cast-in-situs type pre-stressed steel plate concrete pile;
Fig. 3 is the cross section structure schematic diagram three of described Cast-in-situs type pre-stressed steel plate concrete pile;
Fig. 4 is the structural representation of a preferred embodiment of supporting piling wall of the present invention;
Fig. 5 is the structural representation of another preferred embodiment of supporting piling wall of the present invention.
Detailed description of the invention
To the technical scheme in the embodiment of the present invention be clearly and completely described below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 to Fig. 5, the embodiment of the present invention comprises:
Embodiment mono-:
Consult Fig. 1 and Fig. 4, a kind of Cast-in-situs type pre-stressed steel plate concrete pile, comprise: the hollow casing body 11 that formed by steel plate, at the inner cast-in-place layer of concrete that form 12 of described hollow casing body 11 be arranged on the many presstressed reinforcing steels 13 in described layer of concrete 12, the upper end open of described hollow casing body 11, bottom is enclosed construction, this Cast-in-situs type pre-stressed steel plate concrete pile is to adopt cast in situs method to make, and has reduced cost of transportation, easy construction.
The steel plate wall thickness of composition hollow casing body 11 is 1.5mm ~ 30mm, sets according to different construction works.
The cross section of described hollow casing body 11 is dumbbell shape, comprises top flange 111, bottom flange 112 and is arranged on the web 113 between described top flange 111, bottom flange 112, rational in infrastructure, after concreting, can obtain higher intensity.
Described top flange 111, bottom flange 112 and web 113 are all rectangle, and described top flange 111 be arranged in parallel with bottom flange 112, the setting vertical with top flange 111 of described web 113.
Described presstressed reinforcing steel 13 is arranged in top flange 111 and bottom flange 112, and presstressed reinforcing steel in presstressed reinforcing steel and bottom flange in top flange is symmetrical arranged.
Described presstressed reinforcing steel 13 comprise with concrete tight bond have adhesive section and expose concrete without adhesive section, described in have adhesive section and concrete tight bond, be used for reaching and applying the after-applied prestressing force of prestress strength at pile body without adhesive section.
As shown in Figure 4, the present invention also provides a kind of supporting piling wall with above-mentioned Cast-in-situs type pre-stressed steel plate concrete pile, and described supporting piling wall comprises several cement mixing methods and is arranged on the Cast-in-situs type pre-stressed steel plate concrete pile in described cement mixing method.
Described cement mixing method adopts triaxial cement mixing pile construction machinery to construct, process the cement mixing method of three mutual interlocks at every turn, be respectively front stake, central pile and rear stake, form a Soil-cement pile element, form body of wall by multiple form of construction work, in described cement mixing method continuously or interval Cast-in-situs type pre-stressed steel plate concrete pile is set.
Described supporting piling wall is formed by multiple Soil-cement pile element Heterogeneous Permutations, the rear stake of previous Soil-cement pile element and front interlock mutually of a rear Soil-cement pile element, form alternating expression structure, strengthened overall bending rigidity and Lateral resisting ability.In practice of construction process, undersized Cast-in-situs type pre-stressed steel plate concrete pile can be set in independent cement mixing method, in the cement mixing method of the mutual interlock of dislocation place, large-sized Cast-in-situs type pre-stressed steel plate concrete pile is set.
Embodiment bis-:
Consult Fig. 2 and Fig. 5, a kind of Cast-in-situs type pre-stressed steel plate concrete pile, comprise: the hollow casing body 21 that formed by steel plate, at the inner cast-in-place layer of concrete that form 22 of described hollow casing body 21 be arranged on the many presstressed reinforcing steels 23 in described layer of concrete 22, the upper end open of described hollow casing body 21, bottom is enclosed construction, this Cast-in-situs type pre-stressed steel plate concrete pile is to adopt cast in situs method to make, and has reduced cost of transportation, easy construction.
The cross section of described hollow casing body 21 is dumbbell shape, comprises top flange 211, bottom flange 212 and is arranged on the web 213 between described top flange 211, bottom flange 212, rational in infrastructure, after concreting, can obtain higher intensity.
Described top flange 211 and bottom flange 212 are rectangle, and described web 213 comprises two symmetrically arranged indent circular arc steel plates 214.
Described presstressed reinforcing steel 23 is arranged in top flange 211 and bottom flange 212, and presstressed reinforcing steel in presstressed reinforcing steel and bottom flange in top flange is symmetrical arranged.
Described presstressed reinforcing steel 23 comprise with concrete tight bond have adhesive section and expose concrete without adhesive section, described in have adhesive section and concrete tight bond, be used for reaching and applying the after-applied prestressing force of prestress strength at pile body without adhesive section.
As shown in Figure 5, the present invention also provides a kind of supporting piling wall with above-mentioned Cast-in-situs type pre-stressed steel plate concrete pile, and described supporting piling wall comprises several cement mixing methods and is arranged on the Cast-in-situs type pre-stressed steel plate concrete pile in described cement mixing method.
Described cement mixing method adopts triaxial cement mixing pile construction machinery to construct, process the cement mixing method of three mutual interlocks at every turn, be respectively front stake, central pile and rear stake, form a Soil-cement pile element, form body of wall by multiple form of construction work, in described cement mixing method continuously or interval Cast-in-situs type pre-stressed steel plate concrete pile is set.
Described supporting piling wall comprises the cement soil wall matrix being made up of multiple cement mixing methods that are arranged in order mutual interlock, be interval with multiple Soil-cement pile elements that are parallel to described cement soil wall matrix in described cement soil wall matrix one side, the distance at interval can be a cement mixing method or multiple cement mixing method, determine according to the length of actual cement soil wall matrix, three stakes of described Soil-cement pile element respectively with cement soil wall matrix on three mutual interlocks of stake, form raised type structure, in described cement mixing method continuously or be arranged at intervals with Cast-in-situs type pre-stressed steel plate concrete pile, overall bending rigidity and Lateral resisting ability are strengthened.In practice of construction process, undersized Cast-in-situs type pre-stressed steel plate concrete pile can be set in independent cement mixing method, in the cement mixing method of the mutual interlock at raised type structure place, large-sized Cast-in-situs type pre-stressed steel plate concrete pile is set.
Embodiment tri-:
As shown in Figure 3, the third embodiment of the present invention and the first embodiment are basic identical, and the main distinction is that the both sides of described top flange and bottom flange change arc-shaped edges into by original straight flange.
The present invention also provides the construction method of above-mentioned Cast-in-situs type pre-stressed steel plate concrete pile, comprises following concrete steps:
A, in described hollow casing body inner side, one template is set, in described template, there are multiple conduits that match with presstressed reinforcing steel position;
B, employing cement-soil stirring pile construction machinery are constructed, and form cement mixing method;
C, hollow casing body is put into cement mixing method together with template, and in each conduit, put into respectively presstressed reinforcing steel, the bottom of described hollow casing body is pyramid enclosed construction, avoid hollow casing body during insertion, cement paste in cement-soil enters in hollow casing body, affects the intensity of high-strength concrete;
The bottom of described hollow casing body is pyramid enclosed construction, also makes hollow casing body put into the process of cement mixing method more smooth and easy;
D, from hollow casing body upper end open to its inner concreting, template and conduit upwards promote in concreting process, when concreting completes, template and conduit are also extracted completely, described template and conduit upwards promote by bobbing machine, when lifting, also the vibration tamping by template is closely knit concrete.
The present invention has following beneficial effect:
1, Cast-in-situs type pre-stressed steel plate concrete pile of the present invention, can be according to designing requirement, and the trouble of pile body spreading has been avoided in cast in situs in cement mixing method, has reduced cost of transportation.
2, compared with bored pile, Cast-in-situs type pre-stressed steel plate concrete pile of the present invention, the reinforcing bar adopting and concrete consumption are few, cost-saving, and little to ambient influnence.
3,, compared with the stake of SMW engineering method, Cast-in-situs type pre-stressed steel plate concrete pile of the present invention, with respect to shaped steel, has increased intensity, has reduced cost of transportation, and does not need to pull out, avoided engineering to complete after the loss problem of pulling out of shaped steel.
4, supporting piling wall of the present invention, adopts Cast-in-situs type pre-stressed steel plate concrete pile, has good bending rigidity, and supporting intensity is high.
In sum, Cast-in-situs type pre-stressed steel plate concrete pile of the present invention and construction method thereof and supporting piling wall, ensure the safe and reliable of foundation pit supporting construction, there is again good economic benefit, easy construction, ambient influnence is little, has further met the demand that base pit engineering is built.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a Cast-in-situs type pre-stressed steel plate concrete pile, it is characterized in that, comprise: the hollow casing body that formed by steel plate, at the inner cast-in-place layer of concrete forming of described hollow casing body be arranged on many presstressed reinforcing steels in described layer of concrete, the upper end open of described hollow casing body, bottom is enclosed construction.
2. Cast-in-situs type pre-stressed steel plate concrete pile according to claim 1, is characterized in that, the cross section of described hollow casing body is dumbbell shape, comprises top flange, bottom flange and is arranged on the web between described top flange, bottom flange.
3. Cast-in-situs type pre-stressed steel plate concrete pile according to claim 2, is characterized in that, described top flange, bottom flange and web are all rectangle, and described top flange and bottom flange be arranged in parallel, and described web is vertical with top flange to be arranged.
4. Cast-in-situs type pre-stressed steel plate concrete pile according to claim 2, is characterized in that, described top flange and bottom flange are rectangle, and described web comprises two symmetrically arranged indent circular arc steel plates.
5. Cast-in-situs type pre-stressed steel plate concrete pile according to claim 2, is characterized in that, described presstressed reinforcing steel is arranged in top flange and bottom flange, and presstressed reinforcing steel in presstressed reinforcing steel and bottom flange in top flange is symmetrical arranged.
6. Cast-in-situs type pre-stressed steel plate concrete pile according to claim 1, is characterized in that, described presstressed reinforcing steel comprise with concrete tight bond have adhesive section and expose concrete without adhesive section.
7. Cast-in-situs type pre-stressed steel plate concrete pile according to claim 1, is characterized in that, the bottom of described hollow casing body is pyramid enclosed construction.
8. a construction method for Cast-in-situs type pre-stressed steel plate concrete pile as claimed in claim 1, is characterized in that, comprises following concrete steps:
A, in described hollow casing body inner side, one template is set, in described template, there are multiple conduits that match with presstressed reinforcing steel position;
B, employing cement-soil stirring pile construction machinery are constructed, and form cement mixing method;
C, hollow casing body is put into cement mixing method together with template, and put into respectively presstressed reinforcing steel in each conduit;
D, from hollow casing body upper end open to its inner concreting, template and conduit in concreting process upwards promote, when concreting completes, template and conduit are also extracted completely.
9. the construction method of Cast-in-situs type pre-stressed steel plate concrete pile according to claim 8, is characterized in that, in steps d, template and conduit upwards promote by bobbing machine.
10. a supporting piling wall, it is characterized in that, described supporting piling wall comprises several cement mixing methods and be arranged on the Cast-in-situs type pre-stressed steel plate concrete pile in described cement mixing method, and described Cast-in-situs type pre-stressed steel plate concrete pile is the Cast-in-situs type pre-stressed steel plate concrete pile described in claim 1 ~ 7 any one.
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| CN201410181907.2A CN104032732B (en) | 2014-05-04 | 2014-05-04 | Cast-type pre-stressed steel plate concrete-pile and construction method thereof and supporting piling wall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309128A (en) * | 2021-05-24 | 2021-08-27 | 北京建材地质工程有限公司 | Construction method of dumbbell-shaped cement soil curtain pile in peat soil stratum |
| CN113529790A (en) * | 2021-07-26 | 2021-10-22 | 中铁四局集团第五工程有限公司 | Underground driveway prestressed side wall and tensioning construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113309128A (en) * | 2021-05-24 | 2021-08-27 | 北京建材地质工程有限公司 | Construction method of dumbbell-shaped cement soil curtain pile in peat soil stratum |
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| CN113529790B (en) * | 2021-07-26 | 2022-08-26 | 中铁四局集团第五工程有限公司 | Underground driveway prestressed side wall and tensioning construction method thereof |
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| CN104032732B (en) | 2016-11-16 |
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Address after: 213015 Jiangsu province Changzhou City Zhonglou District Mushu Road No. 10 Patentee after: Jiangsu Dingda Building New Technology Co., Ltd. Patentee after: Changzhou Institute of building science group Limited by Share Ltd Address before: 213015 Jiangsu province Changzhou City Zhonglou District Mushu Road No. 10 Patentee before: Jiangsu Dingda Building New Technology Co., Ltd. Patentee before: Changzhou Architectural Research Institute Co., Ltd. |