CN102587359B - Reusable reinforced concrete composite pile available for on-load segmental disassembly and construction method of reusable reinforced concrete composite pile available for on-load segmental disassembly - Google Patents
Reusable reinforced concrete composite pile available for on-load segmental disassembly and construction method of reusable reinforced concrete composite pile available for on-load segmental disassembly Download PDFInfo
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- CN102587359B CN102587359B CN 201210090196 CN201210090196A CN102587359B CN 102587359 B CN102587359 B CN 102587359B CN 201210090196 CN201210090196 CN 201210090196 CN 201210090196 A CN201210090196 A CN 201210090196A CN 102587359 B CN102587359 B CN 102587359B
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Abstract
Disclosed are a reusable reinforced concrete composite pile available for on-load segmental disassembly and a construction method of the reusable reinforced concrete composite pile available for on-load segmental disassembly. The reusable reinforced concrete composite pile comprises a lower reinforced concrete pile body and an upper steel box structured pile body. The upper steel box structured pile body is composed of unit steel boxes. Segmental alternate stressing of a bearing face of the top unit steel box is realized by the aid of two jack sets, so that the pile body can be segmentally disassembled under the continuous on-load stressed condition, and variability of top load stress elevation is realized. The upper steel box combined pile body is connected through bolts under protection, so that disassembly and reuse of steel box units are facilitated.
Description
Technical field
The present invention relates to the building structure construction field.Particularly a kind of be used to the combined pile body structure that vertical bearing capacity is provided, compound pile is continuing can to realize that piecemeal is alternately stressed under the band year stress, and segmentation is disassembled, and reusable, is beneficial to low-carbon environment-friendly.
Background technology
In the foundation pit construction process, the essential big load operation platform of some engineerings adopts grouser that vertical bearing capacity is provided, and need finish before soil excavation, and along with soil excavation is adjusted absolute altitude, is removed after finishing.Based on existing job practices, can only repeat to arrange, repeat to arrange and caused cost increase, construction period longer; The temporary steel that present existing job practices adopts-its steel superstructure of concrete compound pile adopts steel pipe or the steel lattice column of integral solder more, all belongs to disposable input, even only handle as waste wood after recovery, can't reuse, and is unfavorable for low-carbon environment-friendly.
Summary of the invention
The objective of the invention is: provide a kind of and be with a year segmentation to disassemble and reusable steel-concrete compound pile and job practices thereof.By upper steel casing pile body lateral cross section is divided into two; longitudinal divisions; assisting down of two groups of jack; realize that the stake section piecemeal of bearing responsibility is alternately stressed; so that pile body is continuing to be with under year stress and can disassemble by piecemeal; and then realize that stake is born responsibility and carry the changeability of stressed absolute altitude that its upper steel box body combinations pile body connects by the bolt of having taked safeguard measure, is convenient to the steel box unit and disassembles and reuse.
To achieve these goals, technical scheme of the present invention provides a kind of being with and carries that a segmentation is disassembled and reusable steel-concrete compound pile, steel-concrete compound pile comprises lower rebar concrete pile body and upper steel body structure pile body, upper steel body structure pile body is combined to form the pile body with bearing cross-section by several unit steel casings by the connector connection, two half block semicircular arc unit steel cabinet panels of the symmetry that steel body structure pile body lateral cross section is divided into are as the stressed bearing surface of stake top piecemeal, steel body structure pile body vertically is divided into some segment unit steel casings, section length is smaller or equal to a jack stroke, all connect by connector between upper steel body structure pile body lateral cross section piecemeal and the longitudinal divisions, assisting down of two groups of jack, alternately stressed by the stake section piecemeal of bearing responsibility, it is stressed to realize that compound pile continues, and steel body structure pile body cross-section center reserves discharge hole under the concreting conduit.
Described unit steel casing is by unit steel casing outer arc plate, unit steel casing inner arc plate, unit steel cabinet panel, unit steel box bottom, the vertical junction plate of unit steel casing, the steel casing floor of radially putting more energy in unit is formed, unit steel casing inner arc plate and outer arc plate are arranged between unit steel cabinet panel and the base plate, be connected by the unit steel casing floor of radially putting more energy between unit steel casing outer arc plate and the inner arc plate, two halves module unit steel casing opposite face radially arranges the vertical junction plate of unit steel casing, unit steel cabinet panel, base plate, vertical junction plate is provided with the connector hole.
Described connector is bolt, and the connector hole evenly distributes.
Described unit steel casing internal diameter size is greater than concreting conduit outside dimension.
Above-mentioned a kind of with carrying that segmentation is disassembled and reusable steel-concrete compound pile continues band and carries segmentation under the state and disassemble concrete job practices and comprise the steps:
One, ground assembling steel body structure pile body: the required stake of foundation construction is born responsibility and is carried a stressed absolute altitude change in elevation, and several unit steel casings are assembled by connector, forms steel body structure pile body;
Two, steel-concrete compound pile construction: the steel body structure pile body that assembling is finished and the reinforcing cage integral hoisting of lower rebar concrete pile body are transferred conduit by steel casing center reservation pouring hole to the stake hole, build the bottom pile concrete to design elevation;
Three, band carries segmentation to be disassembled: on two independent bearing cross sections of steel body structure pile body end face jack A and jack B are installed respectively, upper load at first is passed on the steel body structure pile body by jack A, progressively shrink jack A, upper load is moved down be carried on the jack B, remove half unit steel casing of jack A and its underpart, simultaneously the jack A that removes is mounted on the unit steel casing of next joint, progressively shrink jack B, upper load is moved down be carried on the jack A, remove half unit steel casing of jack B and its underpart, so far finish an once band year segmentation and disassemble cyclic process;
Four, process is disassembled in a band year segmentation in the repeating step three, carries a stressed absolute altitude until stake is born responsibility and is displaced downwardly to predetermined absolute altitude.
Compared with prior art the present invention has following characteristics and beneficial effect:
At first, by innovation top bearing structure form, adopt steel box body combinations assembly form to reach the purpose of bearing cross-section being carried out piecemeal.Descend by two groups of jack relays that are arranged on the every bearing cross-section in stake top, realized that compound pile carries under the state and can need arbitrarily to change stake according to engineering construction and bear responsibility and carry a stressed absolute altitude continuing band, avoided carrying stressed absolute altitude and change other working measure cost that produces and drop into.
Secondly, abandoning tradition steel-concrete compound pile middle and upper part steel work disposable integral welding procedure, each steel box unit adopt bolt to be connected to form the integrated carrying pile body, and pile body can be adjusted length flexibly according to actual demands of engineering, and reusable, be beneficial to low-carbon environment-friendly.
Description of drawings
Fig. 1 is compound pile pile body generalized section of the present invention
Fig. 2 is compound pile of the present invention unit steel box body combinations schematic diagram
Fig. 3, the 4th, compound pile band of the present invention carries segmentation disassembles schematic diagram
Fig. 5 is compound pile stake of the present invention top jack relay carrying schematic diagram
Reference numeral:
Radially put more energy into floor, 9-connector, 10-of 1-steel concrete pile body, 2-steel body structure pile body, 3-unit steel casing, 4-unit steel casing outer arc plate, 5-unit steel casing inner arc plate, 6-unit steel cabinet panel, 7-unit steel box bottom, 8-unit steel casing built discharge hole under the conduit, 11a-jack A, 11b-jack B
The specific embodiment
The present invention is specified as follows below in conjunction with specific embodiment: shown in Fig. 1 compound pile pile body generalized section, reusable steel-concrete compound pile comprises lower rebar concrete pile body 1 and upper steel body structure pile body 2 can be with a year segmentation to disassemble also, and upper steel body structure pile body 2 is combined to form the pile body with bearing cross-section by several unit steel casings 3 by connector 9 connections.Shown in Fig. 2 unit steel box body combinations schematic diagram, two half block semicircular arc unit steel cabinet panels 6 of the symmetry that steel body structure pile body 2 lateral cross section are divided into are as the stressed bearing surface of stake top piecemeal.Carrying segmentation as Fig. 3,4 compound pile bands disassembles shown in the schematic diagram, steel body structure pile body 2 vertically is divided into some segment unit steel casings 3, section length is smaller or equal to a jack stroke, all connect by connector between upper steel body structure pile body 2 lateral cross section piecemeals and the longitudinal divisions, assisting down of two groups of jack, alternately stressed by the stake section piecemeal of bearing responsibility, it is stressed to realize that compound pile continues, and steel body structure pile body cross-section center reserves discharge hole 10 under the concreting conduit.
Wherein, shown in Fig. 2 compound pile unit steel box body combinations schematic diagram; unit steel casing 3 is by unit steel casing outer arc plate 4; unit steel casing inner arc plate 5; unit steel cabinet panel 6; unit steel box bottom 7; the vertical junction plate of unit steel casing; steel casing radially put more energy into floor 8 in unit is formed; unit steel casing inner arc plate 5 and outer arc plate 4 are arranged between unit steel cabinet panel 6 and the base plate 7; be connected by the unit steel casing floor 8 of radially putting more energy between unit steel casing outer arc plate 4 and the inner arc plate 5; two halves module unit steel casing 3 opposite faces radially arrange the vertical junction plate of unit steel casing; unit steel cabinet panel 6; base plate 7; vertical junction plate is provided with the connector hole; the connector hole evenly distributes; by the connector bolt; two halves module unit steel casing is connected into monolithic unit steel casing; further unit steel casing is assembled into steel body structure pile body; wherein the quantity of unit steel casing is born responsibility according to the required stake of construction and is carried a stressed absolute altitude and require flexible setting; avoid bolt contaminated by safeguard measure is set, be convenient to disassemble also reusable.Unit steel casing 3 internal diameter sizes are convenient to concrete cast conduit and are transferred greater than concreting conduit outside dimension, carry out the cast of lower rebar concrete pile body.
Carrying segmentation as Fig. 3,4 compound pile bands of the present invention disassembles shown in schematic diagram and Fig. 5 stake top jack relay carrying schematic diagram, can be with carrying that segmentation is disassembled and reusable steel-concrete compound pile continues band and carries segmentation under the state to disassemble concrete construction sequence as follows: one, ground assembling steel body structure pile body 2: bear responsibility according to the required stake of construction and carry a stressed absolute altitude change in elevation, several unit steel casings 3 are assembled by connector 9, formed steel body structure pile body 2; Two, steel-concrete compound pile construction: the steel body structure pile body 2 that assembling is finished and the reinforcing cage integral hoisting of lower rebar concrete pile body 1 are reserved pouring hole 10 by steel casing center and are transferred conduit to the stake hole, build the bottom pile concrete to design elevation; Three, band carries segmentation to be disassembled: on two independent bearing cross sections of steel body structure pile body 2 end faces jack A11-a and jack B11-b are installed respectively, upper load at first is passed on the steel body structure pile body 2 by jack A11-a, progressively shrink jack A11-a, upper load is moved down be carried on jack B11-b upward (referring to Fig. 4), remove half unit steel casing 3 of jack A11-a and its underpart, simultaneously the jack A11-a that removes is mounted on the unit steel casing 3 of next joint, progressively shrink jack B11-b, upper load is moved down be carried on jack A11-a upward (referring to Fig. 3), remove half unit steel casing 3 of jack B11-b and its underpart, so far finish an once band year segmentation and disassemble cyclic process; Four, process is disassembled in a band year segmentation in the repeating step three, carries a stressed absolute altitude until stake is born responsibility and is displaced downwardly to predetermined absolute altitude.
Claims (3)
1. can be with a year segmentation to disassemble and reusable steel-concrete compound pile for one kind, it is characterized in that: steel-concrete compound pile comprises lower rebar concrete pile body (1) and upper steel body structure pile body (2), upper steel body structure pile body (2) is combined to form the pile body with bearing cross-section by several unit steel casings (3) by connector (9) connection, two half block semicircular arc unit steel cabinet panels (6) of the symmetry that steel body structure pile body (2) lateral cross section is divided into are as the stressed bearing surface of stake top piecemeal, steel body structure pile body (2) vertically is divided into some segment unit steel casings (3), section length is smaller or equal to a jack stroke, all connect by connector between upper steel body structure pile body (2) lateral cross section piecemeal and the longitudinal divisions, assisting down of two groups of jack, alternately stressed by the stake section piecemeal of bearing responsibility, it is stressed to realize that compound pile continues, steel body structure pile body cross-section center reserves discharge hole under the concreting conduit, described connector (9) is bolt, the connector hole evenly distributes, and described unit steel casing (3) internal diameter size is greater than concreting conduit outside dimension.
2. a kind of being with according to claim 1 carries that a segmentation is disassembled and reusable steel-concrete compound pile, it is characterized in that: described unit steel casing (3) is by unit steel casing outer arc plate (4), unit steel casing inner arc plate (5), unit steel cabinet panel (6), unit steel box bottom (7), the vertical junction plate of unit steel casing, the steel casing floor (8) of radially putting more energy in unit is formed, unit steel casing inner arc plate (5) and unit steel casing outer arc plate (4) are arranged between unit steel cabinet panel (6) and the unit steel box bottom (7), be connected by the unit steel casing floor (8) of radially putting more energy between unit steel casing outer arc plate (4) and the unit steel casing inner arc plate (5), two halves module unit steel casing (3) opposite face radially arranges the vertical junction plate of unit steel casing, unit steel cabinet panel (6), unit steel box bottom (7), vertical junction plate is provided with the connector hole.
3. according to claim 1 and 2 a kind of with carrying that segmentation is disassembled and reusable steel-concrete compound pile continues the segmentation that band carries under the state and disassembles concrete job practices, it is characterized in that comprising the steps:
One, ground assembling steel body structure pile body (2): the required stake of foundation construction is born responsibility and is carried a stressed absolute altitude change in elevation, and several unit steel casings (3) are assembled by connector (9), forms steel body structure pile body (2);
Two, steel-concrete compound pile construction: the steel body structure pile body (2) that assembling is finished and the reinforcing cage integral hoisting of lower rebar concrete pile body (1) are to the stake hole, transfer conduit by discharge hole (10) under the concreting conduit of steel casing center reservation, build the bottom pile concrete to design elevation;
Three, band carries segmentation to be disassembled: on two independent bearing cross sections of steel body structure pile body (2) end face jack A(11-a is installed respectively) and jack B(11-b), make upper load at first by jack A(11-a) be passed on the steel body structure pile body (2), progressively shrink jack A(11-a), upper load is moved down is carried on jack B(11-b) on, remove jack A(11-a) and half unit steel casing (3) of its underpart, simultaneously with the jack A(11-a that removes) be mounted on the unit steel casing (3) of next joint, progressively shrink jack B(11-b), upper load is moved down is carried on jack A(11-a) on, remove jack B(11-b) and half unit steel casing (3) of its underpart, so far finish once band and carry a segmentation and disassemble cyclic process;
Four, process is disassembled in a band year segmentation in the repeating step three, carries a stressed absolute altitude until stake is born responsibility and is displaced downwardly to predetermined absolute altitude.
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| CN 201210090196 CN102587359B (en) | 2012-03-30 | 2012-03-30 | Reusable reinforced concrete composite pile available for on-load segmental disassembly and construction method of reusable reinforced concrete composite pile available for on-load segmental disassembly |
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| CN 201210090196 CN102587359B (en) | 2012-03-30 | 2012-03-30 | Reusable reinforced concrete composite pile available for on-load segmental disassembly and construction method of reusable reinforced concrete composite pile available for on-load segmental disassembly |
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| CN103572837B (en) * | 2012-07-30 | 2016-08-10 | 上海天演建筑物移位工程有限公司 | A kind of building jacking method |
| CN103046542B (en) * | 2012-12-04 | 2015-09-30 | 中建三局建设工程股份有限公司 | Deep foundation pit inner support steel tube column and cast-in-place concrete pile construction technology simultaneously |
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| KR100768321B1 (en) * | 2004-10-07 | 2007-10-17 | 주식회사 포스코 | Girder-abutment connecting detail for jointless steel box girder bridge |
| CN101067303A (en) * | 2007-02-13 | 2007-11-07 | 铁道第二勘察设计院 | Active pile foundation underpinning structure and constructing method thereof |
| CN201121320Y (en) * | 2007-09-29 | 2008-09-24 | 王茂华 | High bearing ability building foundation pile |
| CN202509490U (en) * | 2012-03-30 | 2012-10-31 | 中建三局建设工程股份有限公司 | Steel-concrete combined pile capable of being disassembled under load by segments and being repeatedly used |
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