CN102953385B - Construction method for changing support of foundation pit at irregular place of rampway - Google Patents
Construction method for changing support of foundation pit at irregular place of rampway Download PDFInfo
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- CN102953385B CN102953385B CN201210529951.9A CN201210529951A CN102953385B CN 102953385 B CN102953385 B CN 102953385B CN 201210529951 A CN201210529951 A CN 201210529951A CN 102953385 B CN102953385 B CN 102953385B
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Abstract
The invention discloses a construction method for changing a support of a foundation pit at an irregular place of a rampway, and the construction method comprises the following steps of (1) setting supporting piles on the outer circumferential direction of a rampway irregular place, placing an inner support system on the inner side of each supporting pile, and digging a foundation pit; (2) paving a rampway irregular-place soleplate inside the foundation pit, and building an inner wall and an outer wall on two sides of the rampway irregular-place soleplate; (3) backfilling between the supporting piles and the outer wall; (4) respectively binding two ends of a reinforced steel bar of a rampway roof beam with sliding ribs which are reserved on the inner wall and the outer wall; (5) respectively joining two ends of a reinforced steel bar of a support changing beam with the inner wall and the outer wall; (6) pouring the support changing beam concrete; (7) disassembling the inner suppot system; and (8) continuously binding the reinforced steel bar of the rampway roof beam and the reinforced steel bars of the inner wall and the outer wall of the rampway, and then binding the reinforced steel bar of the rampway roof so as to make the reinforced steel bar of the rampway roof connected with the reinforced steel bar of the rampway roof beam and the reinforced steel bars of the inner wall and the outer wall of the rampway; and finally pouring the concrete. Due to the adoption of the method, the support changing system is balanced and stable to stress and sufficient in strength.
Description
Technical field
The present invention relates to a kind of foundation ditch support replacement construction method, relate in particular to the construction method of abnormity place, a kind of ramp foundation ditch support replacement.
Background technology
In the Construction of Deep Foundation of highrise building, the foundation pit supporting project construction period is long, and cost is high, is the emphasis stage of whole engineering.The design form of pattern foundation pit supporting structure is more, but is subject to the restriction of engineering present position and geological conditions, and not only economy but also the support form that is suitable for were often few.At present concrete inner support system requires low, easy construction to be applied in more and more in the engineering of deep foundation pit support because of it to surrounding enviroment, but is subject to the restriction of foundation ditch support system, engineering construction during to certain position the dismounting of inner support be a necessary process.In the construction of basement car ramp, ramp is in the time of special rotating angle place, and stressed complexity, just need to carry out special support replacement technology construction to special rotating angle place, ramp, just can carry out the dismounting of foundation ditch inner support, guarantee ramp construction safety while then carrying out the construction of follow-up ramp.
Learn the patent of having authorized by retrieval:
1 application number is that the Chinese patent of CN201010570902.0 discloses " a kind of method of changing support of foundation pit enclosing rib plates ", and the present invention discloses a kind of method of changing support of foundation pit enclosing rib plates, comprises step 1) complete the construction of bracing of foundation pit body of wall; 2) complete the construction of sole plate; 3) along retaining wall direction, make the trapezoidal floor perpendicular to retaining wall together, 4 every a segment distance) to construct and enclose purlin, this encloses purlin all floors is coupled together, form entirety, between trapezoidal floor and retaining wall and sole plate, be connected by reserved steel bar or bar planting.
2 application numbers are that the Chinese patent of CN201010570914.3 discloses " adopting ring flat-plate to carry out the construction method of base plate of foundation pit support replacement ", the present invention relates to a kind of construction method that adopts ring flat-plate to carry out base plate of foundation pit support replacement, the steps include: that 1. construct space enclosing structure, support, and cut the earth to foundation ditch bottom surface; 2. the base section of construction cast ring flat-plate, ring beam concrete and central area steel work; 3. when the concrete strength of ring flat-plate and ring beam reaches after requirement, remove the support of base plate top; 4. the base plate of construction cast central area and installation main body steel work.The method utilizes stable force structure that ring flat-plate and ring beam form to carry out the support replacement of base plate, in the time that not yet completing, central area base plate can carry out the support replacement of base plate, make the construction period of central area peel off out from the support replacement cycle of base plate, thereby improve efficiency of construction.
3 application numbers are that the Chinese patent of CN201010597363.X discloses " frame type combined support-replacing system and construction method thereof ", the present invention relates to a kind of frame type combined support-replacing system and construction method thereof, comprise lattice column, support, agent structure, support replacement arranges respectively support replacement below original support, forms frame type combination support replacement.Frame type combined support-replacing system is that a kind of newly-built support replacement supports the novel support-replacing system that forms the common resisting structure lateral force of frame type combined support in conjunction with original part.It has utilized original part to support, not only reduced newly-built Construction of Supporting workload, but also saved original supporting removal construction period.
4 application numbers are that the Chinese patent of CN201110321079.4 discloses " the fast support replacing construction method in deep-foundation pit engineering ", the invention discloses the fast support replacing construction method in a kind of deep-foundation pit engineering, comprise step 1) first support replacement floor is arranged between basement concrete base plate and foundation pit supporting construction, for spaced multiple, the outside of each first support replacement floor is connected with the inner side of foundation pit supporting construction, and inner side is connected with basement concrete base plate; First support replacement floor and basement concrete base plate are constructed simultaneously, after basement concrete base plate and the form removal of first support replacement floor, remove the most lower one temporary supporting in foundation ditch bottom, the backfill earthwork compacting between adjacent first support replacement floor; Support replacement floor has two kinds, and the first is horizontal concrete floor, and the second is T shape concrete floor, and the middle riser of T shape concrete floor is vertical with foundation pit supporting construction.The invention also discloses the another kind of fast support replacing method of vertical concrete floor as support replacement floor that adopt.
5 application numbers are that the Chinese patent of CN201210223319.1 discloses " a kind of construction method that utilizes the construction of constructure body structure support replacement ", the present invention relates to a kind of construction method that utilizes the construction of constructure body structure support replacement, this pattern foundation pit supporting structure utilizes steel supporting component two ends to be supported on respectively on foundation pit supporting pile and constructure body structure beam slab, steel supporting component one end is enclosed purlin by steel and is connected with structure beam slab with steel campshed, and adopt at position, ater-casting, hole and position, ramp arrange steel work Force transmission parts, thereby foundation ditch is played to support action, under this support action, construction foundation pit soldier pile and the agent structure having finished between structure.
6 application numbers are that the Chinese patent of CN201120403151.3 discloses " a kind of Quick support changing structure for use of deep foundation ditch ", the utility model discloses a kind of Quick support changing structure for use of deep foundation ditch, comprise first support changing structure for use, first support changing structure for use comprises the horizontal support replacement concrete of the multiple firsts floor being arranged between basement concrete base plate and foundation pit supporting construction, the horizontal support replacement concrete floor of multiple firsts interval arranges, the outside of the horizontal support replacement concrete of each first floor is connected mutually with the inner side of foundation pit supporting construction, and inner side is connected mutually with basement concrete base plate; Between the horizontal support replacement concrete of adjacent first floor, backfill has the earthwork.
7 application numbers are that the Chinese patent of CN201120402327.3 discloses " a kind of Quick support changing structure for use for super dark super large foundation pit construction ", the utility model discloses a kind of Quick support changing structure for use for super dark super large foundation pit construction, comprise the multiple vertical support replacement concrete floor being arranged between basement wallboard and foundation pit supporting construction, described vertical support replacement concrete floor is vertical with foundation pit supporting construction, multiple described vertical support replacement concrete floors interval arranges, the outside of each described vertical support replacement concrete floor is connected with the inner side of foundation pit supporting construction, inner side is connected with basement wallboard, between adjacent described vertical support replacement concrete floor, backfill has the earthwork.
8 application numbers are that the Chinese patent of CN201020531416.3 discloses " foundation ditch support replacement and bracing demolition constructing structure ", a kind of foundation ditch support replacement and bracing demolition constructing structure, water powder spray piling till foundation ditch inner peripheral, be bored pile in sealing powder spray piling inner side, in bored pile inner side for holding stake, holding a top is cushion cap, cushion cap top is outer wall of basement, cushion cap inner side is basement bottom board, described bored pile upper end is provided with Guan Liang, hat beam inner side is connected with inner support, this inner support is through outer wall of basement, in the outer wall of basement in basement floor floor outside, be provided with dark beam, this dark beam outside is provided with support replacement beam, these support replacement beam two ends are supported on respectively between bored pile and dark beam.
Although 1st ~ 8 patents have a series of advantage, but can not solve in the construction of basement car ramp, ramp is in the time of special rotating angle place, the series of problems such as special rotating angle place, ramp special support replacement technology construction when stressed complexity, thereby carry out the dismounting of foundation ditch inner support, then carry out the construction of follow-up ramp and ensure ramp construction safety.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, abnormity place, a kind of ramp foundation ditch support replacement construction method that provides a kind of stress balance to stablize, have enough intensity, rigidity.
Abnormity place, a kind of ramp of the present invention foundation ditch support replacement construction method, it comprises the following steps:
(1) set soldier pile in abnormity place, ramp excircle direction, support system within soldier pile inner side connects, then digs foundation ditch;
(2) in described foundation ditch, lay ramp abnormity place base plate and build and be positioned at the ramp interior wall of base plate both sides, abnormity place, ramp and ramp exterior wall to the bottom elevation position higher than ramp top board beam, reserve and get rid of muscle on the top of ramp interior wall and ramp exterior wall simultaneously;
(3) adopt bar planting mode to be connected with described ramp inner, external wall respectively arranging the beam steel two ends of spaced support replacement beam each other more;
(4) build support replacement beam concrete; The cross section of many row's support replacement beams starts to be gradually and to dwindle to ramp interior wall from ramp exterior wall;
(5) backfill first floor backfill between soldier pile and described ramp exterior wall, then lays first floor plain concrete conversion strip at the top of first floor backfill, fill out the second layer backfill last time in first floor plain concrete conversion strip;
(6) reach after some strength until many row's support replacement beam concrete, remove described interior support system;
(7) two ends of the reinforcing bar of ramp top board beam are connected with the muscle colligation of getting rid of reserved on ramp interior wall and ramp exterior wall respectively;
(8) continued the reinforcing bar binding of ramp inner, external wall short transverse, then the reinforcing bar of colligation ramp top board makes the reinforcing bar of ramp top board be connected with ramp top board beam steel and ramp inner, external wall reinforcing bar; Finally build the concrete of ramp inner, external wall concrete, ramp top board beam concrete and ramp top board.
Adopt the beneficial effect of the inventive method to be: while construction at basement car ramp special rotating angle place, the stressed complexity in ramp herein, need to carry out special support replacement technology construction to special rotating angle place, ramp, foundation ditch inner support could be removed to guarantee ramp construction safety while then carrying out the construction of follow-up ramp.In order to realize the conversion of whole ramp construction safety and power, support replacement beam steel two ends are connected with described ramp inner, external wall respectively.Form stable support-replacing system.The cross section of described support replacement beam starts to be gradually and to dwindle to ramp interior wall from ramp exterior wall in addition, and support replacement beam stress is taking axial compression as main, so just power equalization stable suffered support replacement beam pass to ramp interior wall, then pass to the slab column of agent structure.The structure that adds support replacement beam is steel concrete, has the mechanical characteristic that rigidity is large and distortion is little, and it can guarantee the safety of the communal facilitys such as ramp construction and periphery adjacent structure, road and underground utilities.Backfill first floor backfill between soldier pile and described ramp exterior wall in addition, then lays first floor plain concrete change-over panel at the top of first floor backfill, fills out the second layer backfill last time in first floor plain concrete conversion strip.Wholely like this form taking support replacement beam, backfill, plain concrete conversion strip as main stable support-replacing system.So adopt this method to make support-replacing system stress balance stablize, have enough intensity, rigidity, guarantee balanced power transmission and the rigidity stability and safety of the support replacement construction at basement car ramp special rotating angle place.
Brief description of the drawings
Fig. 1 is the scheme of installation that adopts abnormity place, a kind of ramp of the present invention foundation ditch support replacement construction method;
Fig. 2 is the installation schematic top plan view that adopts abnormity place, a kind of ramp of the present invention foundation ditch support replacement construction method.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The construction method of abnormity place, a kind of ramp of the present invention foundation ditch support replacement as shown in drawings, it comprises the following steps: (1) sets soldier pile 6 in abnormity place, ramp excircle direction, and support system 5 within soldier pile 6 inner sides connect, then digs foundation ditch; (2) in described foundation ditch, lay ramp abnormity place base plate 1 and build and be positioned at the ramp interior wall 2-2 of base plate both sides, abnormity place, ramp and ramp exterior wall 2-1 to the bottom elevation position higher than ramp top board beam 4, reserve and get rid of muscle on the top of ramp interior wall 2-2 and ramp exterior wall 2-1 simultaneously; (3) adopt bar planting mode to be connected with described ramp inner, external wall respectively arranging the beam steel two ends of spaced support replacement beam 3 each other more; (4) build support replacement beam 3 concrete; The cross section of many row's support replacement beams 3 starts to be gradually and to dwindle to ramp interior wall 2-2 from ramp exterior wall 2-1; (5) backfill first floor backfill between soldier pile 6 and described ramp exterior wall 2-1, then lay first floor plain concrete conversion strip at the top of first floor backfill, fill out the second layer backfill last time in first floor plain concrete conversion strip, generally arrive nature ground.(6) reach after some strength until support replacement beam 3 concrete, remove the interior support system 5 at abnormity place, ramp; (7) two ends of the reinforcing bar of ramp top board beam 4 are connected with ramp interior wall 2-2 and the upper reserved muscle colligation of getting rid of of ramp exterior wall 2-1 respectively; (8) continued the reinforcing bar binding of ramp inner, external wall short transverse, then the reinforcing bar of colligation ramp top board makes the reinforcing bar of ramp top board be connected with ramp top board beam steel and ramp inner, external wall reinforcing bar; Finally build the concrete of ramp inner, external wall concrete, ramp top board beam concrete and ramp top board.
Embodiment 1
(1) set soldier pile 6 in abnormity place, ramp excircle direction, support system 5 within soldier pile 6 inner sides connect, then digs foundation ditch; (2) in described foundation ditch, lay ramp abnormity place base plate 1 and build and be positioned at the ramp interior wall 2-2 of base plate both sides, abnormity place, ramp and ramp exterior wall 2-1 to the bottom elevation position higher than ramp top board beam 4, reserve and get rid of muscle on the top of ramp interior wall 2-2 and ramp exterior wall 2-1 simultaneously; (3) adopt bar planting mode to be connected with described ramp inner, external wall respectively arranging the beam steel two ends of spaced support replacement beam 3 each other more; (4) build support replacement beam 3 concrete; The cross section of many row's support replacement beams 3 starts to be gradually and to dwindle to ramp interior wall 2-2 from ramp exterior wall 2-1; (5) backfill first floor backfill between soldier pile 6 and described ramp exterior wall 2-1, then lay first floor plain concrete conversion strip at the top of first floor backfill, fill out the second layer backfill last time in first floor plain concrete conversion strip, generally arrive nature ground.(6) reach after some strength until support replacement beam 3 concrete, remove the interior support system 5 at abnormity place, ramp; (7) two ends of the reinforcing bar of ramp top board beam 4 are connected with ramp interior wall 2-2 and the upper reserved muscle colligation of getting rid of of ramp exterior wall 2-1 respectively; (8) continued the reinforcing bar binding of ramp inner, external wall short transverse, then the reinforcing bar of colligation ramp top board makes the reinforcing bar of ramp top board be connected with ramp top board beam steel and ramp inner, external wall reinforcing bar; Finally build the concrete of ramp inner, external wall concrete, ramp top board beam concrete and ramp top board;
Through abnormity place, use ramp, scene, enough intensity, rigidity are stablized, had to foundation ditch support replacement construction system stress balance.
Claims (1)
1. a ramp abnormity place foundation ditch support replacement construction method, is characterized in that it comprises the following steps:
(1) set soldier pile in abnormity place, ramp excircle direction, support system within soldier pile inner side connects, then digs foundation ditch;
(2) in described foundation ditch, lay ramp abnormity place base plate and build and be positioned at the ramp interior wall of base plate both sides, abnormity place, ramp and ramp exterior wall to the bottom elevation position higher than ramp top board beam, reserve and get rid of muscle on the top of ramp interior wall and ramp exterior wall simultaneously;
(3) adopt bar planting mode to be connected with described ramp inner, external wall respectively arranging the beam steel two ends of spaced support replacement beam each other more;
(4) build support replacement beam concrete; The cross section of many row's support replacement beams starts to be gradually and to dwindle to ramp interior wall from ramp exterior wall;
(5) backfill first floor backfill between soldier pile and described ramp exterior wall, then lays first floor plain concrete conversion strip at the top of first floor backfill, fill out the second layer backfill last time in first floor plain concrete conversion strip;
(6) reach after some strength until many row's support replacement beam concrete, remove described interior support system;
(7) two ends of the reinforcing bar of ramp top board beam are connected with the muscle colligation of getting rid of reserved on ramp interior wall and ramp exterior wall respectively;
(8) continued the reinforcing bar binding of ramp inner, external wall short transverse, then the reinforcing bar of colligation ramp top board makes the reinforcing bar of ramp top board be connected with ramp top board beam steel and ramp inner, external wall reinforcing bar; Finally build the concrete of ramp inner, external wall concrete, ramp top board beam concrete and ramp top board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529951.9A CN102953385B (en) | 2012-12-07 | 2012-12-07 | Construction method for changing support of foundation pit at irregular place of rampway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210529951.9A CN102953385B (en) | 2012-12-07 | 2012-12-07 | Construction method for changing support of foundation pit at irregular place of rampway |
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| Publication Number | Publication Date |
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| CN102953385A CN102953385A (en) | 2013-03-06 |
| CN102953385B true CN102953385B (en) | 2014-08-06 |
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| CN201210529951.9A Expired - Fee Related CN102953385B (en) | 2012-12-07 | 2012-12-07 | Construction method for changing support of foundation pit at irregular place of rampway |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727324B (en) * | 2015-03-20 | 2016-08-03 | 朱奎 | Irregular basement construction method for supporting |
| CN105332380B (en) * | 2015-11-16 | 2017-04-12 | 上海建工五建集团有限公司 | Strut changing structure and method for underground building |
| CN105863330A (en) * | 2016-05-25 | 2016-08-17 | 上海建工建集团有限公司 | Sequential construction method for car ramps in reverse construction method |
| CN109989406B (en) * | 2017-12-30 | 2020-10-20 | 广州协安建设工程有限公司 | Foundation pit support replacing construction method |
| CN112726624B (en) * | 2020-12-15 | 2023-03-31 | 上海建工集团股份有限公司 | Efficient excavation construction method for deep foundation pit |
| CN114214890A (en) * | 2021-12-02 | 2022-03-22 | 中冶天工集团天津有限公司 | Construction method for anti-settlement bracket of construction ramp after backfilling soil foundation outside underground garage |
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