CN102493487A - Method for constructing foundation slab embedded with concrete supports - Google Patents

Method for constructing foundation slab embedded with concrete supports Download PDF

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Publication number
CN102493487A
CN102493487A CN2011104152866A CN201110415286A CN102493487A CN 102493487 A CN102493487 A CN 102493487A CN 2011104152866 A CN2011104152866 A CN 2011104152866A CN 201110415286 A CN201110415286 A CN 201110415286A CN 102493487 A CN102493487 A CN 102493487A
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Prior art keywords
support
sole plate
concrete
supports
foundation slab
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CN2011104152866A
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CN102493487B (en
Inventor
黄玉林
朱毅敏
陈军
赖文
周臻全
朱刚
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Shanghai First Construction Co Ltd
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Shanghai First Construction Co Ltd
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Abstract

The invention discloses a method for constructing a foundation slab embedded with concrete supports, which comprises the following steps of: digging to the bottommost support surface of soil body, binding support reinforcing steel bars, and embedding foundation slab joint bars; arranging an isolating layer between surrounding purlines and a building envelope; arranging a water stopping structure at a place, which is close to the building envelope, of the support; after binding of the support reinforcing steel bars is finished and pre-embedded parts are embedded, pouring the concretes; after the supports are maintained to the required strength, digging to the bottom of the soil body, pouring plain concretes as a cushion layer, building a bracket for the foundation slab reinforcing steel bars, binding the foundation slab reinforcing steel bars, and connecting a sleeve with the pre-embedded foundation slab reinforcing steel bars on the supports; and pouring foundation slab concretes so as to embed the concrete supports in the foundation slab. The method disclosed by the invention can effectively reduce the length of the end, which has no support cantilever, of the lower part of a retaining wall, thereby preventing demolishing and slag removal works of the bottommost support, facilitating deformation control of foundation pits as well as material saving, and accelerating construction speed of the foundation slab.

Description

Concrete supports embedded sole plate job practices
Technical field
The invention belongs to building underground construction technical field; Relate to a kind of sole plate job practices; Be specifically related to a kind of ultra thick sole plate construction that is used for, the particularly bottom concrete that is positioned at the sole plate absolute altitude that supports together supports embedded sole plate job practices.
Background technology
The conventional way of sole plate construction is behind bottom slab concreting, again supporting removal.When sole plate is ultra when thick, the bottom support together is positioned at the base plate absolute altitude, according to conventional way, after bed course is built, needs carry out bottom slab concreting to one supporting removal in bottom again.At this moment, because not have the supporting cantilever end long in the retaining wall bottom, be unfavorable for the Deformation control of foundation ditch.In addition, dismounting of supporting and scarfing cinder also are unfavorable for material-saving and waste duration.In sum, when adopting present conventional sole plate job practices to construct ultra thick sole plate, the Deformation control ability of foundation ditch a little less than, be unfavorable for material-saving, and speed of application is slow.
Summary of the invention
Technical problem to be solved by this invention provides a kind of concrete and supports embedded sole plate job practices, with solve in the at present ultra thick sole plate construction retaining wall bottom cantilever end long, be unfavorable for foundation pit deformation control, be unfavorable for that material-saving, speed of application wait problem slowly.
The technical scheme of technical solution problem of the present invention is following:
A kind of concrete supports embedded sole plate job practices, it is characterized in that: comprise the steps:
(1) soil body digs one supporting surface to the bottom, and colligation bearing bar, and pre-buried base plate joint bar are kept somewhere mechanical splice, are connected with the sole plate reinforcing bar when treating the sole plate reinforcement construction;
(2) support when enclosing the purlin construction, separation layer is set enclosing between purlin and space enclosing structure, make and enclose purlin with space enclosing structure breaks away from relatively, but vertically free settling;
(3) near the space enclosing structure position water-stopping structure is set in support;
(4) the bearing bar colligation is accomplished, and after burying built-in fitting underground, carries out concreting;
(5) after the support maintenance reached intensity, excavation last batch of soil was built plain concrete cushion layer to substrate, carries out pile crown and handles;
(6) after tanking is laid, set up the sole plate Steel bar rack, and carry out the base plate reinforcing bar binding, sleeve connects to support goes up the base plate reinforcing bar of reserving;
(7) base plate side form and dell template are set up, layouts such as joint bar, hole to be provided, built-in fitting;
(8) pump line is arranged, builds underplate concrete, and maintenance.
Can know that by above disclosed technical scheme the present invention has been through having designed the job practices that concrete supports embedded base plate, support bottom one concrete and be embedded in the sole plate, make and support and the base plate acting in conjunction.Do not have supporting cantilever end length thereby can effectively reduce the retaining wall bottom, avoided bottom dismounting and the scarfing cinder operation of supporting together, help foundation pit deformation control, help material-saving, and accelerated the speed of application of sole plate.
Description of drawings
Fig. 1 is embedded sole plate one embodiment longitudinal profile sketch map for concrete of the present invention supports;
Fig. 2 encloses purlin insulation layer structure sketch map for the present invention supports;
Fig. 3 is embedded sole plate waterproofing node figure for concrete of the present invention supports;
Fig. 4 reserves the joint bar sketch map for the present invention supports.
Reference numeral is following:
1, sole plate 2, the 4th road support 3, plain concrete cushion layer
4, space enclosing structure 5, separation layer 6, waterproof construction
7, the 3rd road supports 8, supports and enclose purlin 601, steel plate for sealing water
602, water stopping trough 603, water-swellable sealing rod 604, waterproof platform
9, pre-buried base plate joint bar 10, reinforcing rib
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is made further detailed description.
Specific embodiment, like the sole plate construction on certain shipping square, owing to sole plate is ultra thick, main building zone base plate thickness reaches 5.0m, and the concrete continuous cast scale of construction is big, and bottom support together, and just the 4th road concrete supports and is positioned at the base plate absolute altitude.If adopt conventional job practices, build bed course earlier, remove the 4th road again and support, build base plate at last, the retaining wall bottom does not have the supporting cantilever end and reaches 6.35m so, and is unfavorable to foundation pit deformation control, and speed of application is slow.
Shown in Fig. 1~4, adopt concrete of the present invention to support embedded sole plate job practices, its step is following:
(1) soil body digs to the 4th road supporting surface 2, colligation bearing bar, and pre-buried base plate joint bar 9; Keep somewhere I level mechanical splice; Be connected with the sole plate reinforcing bar when treating the sole plate reinforcement construction, and, accurately locate the embedded bar except that requiring according to design reinforcement for avoiding the pre-buried deviation that occurs of reinforcing bar; How pre-buried 2~3 reinforcing bars of each direction are to tackle the problems such as reinforcing bar dislocation that pre-buried deviation and reinforcing bar binding deviation cause;
(2) support when enclosing purlin 8 constructions, separation layer 5 is set enclosing 4 of purlin 8 and space enclosing structures, make and enclose purlin 8 and break away from relatively with space enclosing structure 4, but vertically free settling;
(3), near space enclosing structure 4 positions water-stopping structure 6 is set supporting 2 for strengthening the base plate waterproof effect; The circle steel plate for sealing water 601 that said water-stopping structure 6 is buried underground for the end of in the end supporting nearly space enclosing structure together.Said last the support together is provided with the protruding waterproof platform 604 of a circle, and said steel plate for sealing water 601 is embedded in the waterproof platform 604.The height of said waterproof platform 604 is 100~200mm, and the height that said steel plate for sealing water 601 stretches out waterproof platform 604 is 100~200mm.The concrete stayed surface in said steel plate for sealing water 601 outsides is provided with a circle water stopping trough 602, establishes water-swellable sealing rod 603 in the groove.The width of said water stopping trough 602 is 40~60mm, and the degree of depth is 20~30mm.
(4) the bearing bar colligation is accomplished, and after burying built-in fitting underground, carries out concreting; For guaranteeing that sole plate supports combining of new-old concrete with the 4th road, the 4th road supports 2 and adopts and the identical concrete of sole plate 1 grating.
After (5) the 4th roads supported 2 maintenances and reach intensity, excavation last batch of soil was built the 200mm plain concrete cushion layer to substrate, carries out pile crown and handles; New-old concrete is better must to be combined in order to make, and the 4th road supports 2 and does surface " peeling " cutter hair processing, and the cutter hair degree of depth is controlled at 4~6mm, and cutter hair spacing is 8~12mm, and the cutter hair degree of depth of present embodiment is at 5mm, and cutting a hole a hair spacing is 10mm; Stayed surface cutter hair can carry out after support is built 12 hours.Behind cushion construction, carry out the work of support base cutter hair again, and the fragment under will cutting a hole is removed clean.
(6) after tanking is laid, set up the sole plate Steel bar rack, and carry out the base plate reinforcing bar binding, sleeve connects the pre-buried base plate reinforcing bar 9 on supporting;
(7) base plate side form and dell template are set up, layouts such as joint bar, hole to be provided, built-in fitting;
(8) pump line is arranged, builds underplate concrete, and maintenance.
The above is merely preferred embodiments of the present invention, is not to be used for limiting protection scope of the present invention, and every equal conversion of doing according to claim of the present invention is all within protection scope of the present invention.

Claims (9)

1. a concrete supports embedded sole plate job practices, it is characterized in that: comprise the steps:
(1) soil body digs one supporting surface to the bottom, and colligation bearing bar, and pre-buried base plate joint bar are kept somewhere mechanical splice, are connected with the sole plate reinforcing bar when treating the sole plate reinforcement construction;
(2) support when enclosing the purlin construction, separation layer is set enclosing between purlin and space enclosing structure, make and enclose purlin with space enclosing structure breaks away from relatively, but vertically free settling;
(3) near the space enclosing structure position water-stopping structure is set in support;
(4) the bearing bar colligation is accomplished, and after burying built-in fitting underground, carries out concreting;
(5) after the support maintenance reached intensity, excavation last batch of soil was built plain concrete cushion layer to substrate, carries out pile crown and handles;
(6) after tanking is laid, set up the sole plate Steel bar rack, and carry out the base plate reinforcing bar binding, sleeve connects to support goes up the base plate reinforcing bar of reserving;
(7) base plate side form and dell template are set up, layouts such as joint bar, hole to be provided, built-in fitting;
(8) pump line is arranged, builds underplate concrete, and maintenance.
2. concrete according to claim 1 supports embedded sole plate job practices, it is characterized in that: said last the support together adopted the concreting identical with the sole plate grating.
3. concrete according to claim 1 supports embedded sole plate job practices, it is characterized in that: the circle steel plate for sealing water that said water-stopping structure is buried underground for the end of in the end supporting nearly space enclosing structure together.
4. concrete according to claim 3 supports embedded sole plate job practices, it is characterized in that: said last the support together is provided with the protruding waterproof platform of a circle, and said steel plate for sealing water is embedded in the waterproof platform.
5. concrete according to claim 4 supports embedded sole plate job practices, it is characterized in that: the height of said waterproof platform is 100~200mm, and the height that said steel plate for sealing water stretches out the waterproof platform is 100~200mm.
6. concrete according to claim 3 supports embedded sole plate job practices, it is characterized in that: the concrete stayed surface in the said steel plate for sealing water outside is provided with a circle water stopping trough, establishes the water-swellable sealing rod in the groove.
7. concrete according to claim 6 supports embedded sole plate job practices, it is characterized in that: the width of said water stopping trough is 40~60mm, and the degree of depth is 20~30mm.
8. concrete according to claim 1 supports embedded sole plate job practices, it is characterized in that: said last support is together done surface " peeling " cutter hair and is handled.
9. concrete according to claim 8 supports embedded sole plate job practices; It is characterized in that: the said cutter hair degree of depth is 4~6mm; Cutter hair spacing is 8~12cm, and stayed surface cutter hair can carry out after support is built 12 hours, behind cushion construction, carries out support base cutter hair again.
CN201110415286.6A 2011-12-13 2011-12-13 Method for constructing foundation slab embedded with concrete supports Active CN102493487B (en)

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CN102493487B CN102493487B (en) 2014-02-26

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104088296A (en) * 2014-06-24 2014-10-08 上海市城市建设设计研究总院 Soft soil area basement layer adding construction method
CN104120740A (en) * 2014-08-11 2014-10-29 广西壮族自治区冶金建设公司 Construction method for basement construction bottom plate
CN104514228A (en) * 2013-09-29 2015-04-15 浙江宝业建设集团有限公司 Large-chassis multi-tower building construction method and structure
CN104975607A (en) * 2015-07-22 2015-10-14 中建八局第二建设有限公司 Offshore area local deep foundation pit stanching pit construction method
CN105887888A (en) * 2016-04-13 2016-08-24 上海建工建集团有限公司 Layered and fast construction method for foundation pit bottom plate
CN108677963A (en) * 2018-05-23 2018-10-19 中铁第四勘察设计院集团有限公司 A kind of bracing members for base pit engineering stay support joint structure and its construction method
CN113445533A (en) * 2021-07-07 2021-09-28 上海建工一建集团有限公司 Construction method of concrete support embedded bottom plate and support and bottom plate node connecting piece

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0892983A (en) * 1994-09-28 1996-04-09 Kajima Corp Construction method of permanent structure underground exterior wall and earth retaining wall head in inverted construction method
JP2006083610A (en) * 2004-09-16 2006-03-30 Shimizu Corp Inverted construction method
CN101117805A (en) * 2007-08-22 2008-02-06 浙江大学 Underground engineering one-pile multi-use semi reverse construction method
CN101117800A (en) * 2007-08-22 2008-02-06 浙江大学 Method for one-pile-three-use in underground engineering
CN101718094A (en) * 2009-11-10 2010-06-02 朱奎 Construction method for retaining and protecting foundation pit of building with basemen
CN102031785A (en) * 2009-09-24 2011-04-27 上海市第一建筑有限公司 Foundation pit supporting technique for replacing temporary enclosing purlin by using plate belt of permanent structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0892983A (en) * 1994-09-28 1996-04-09 Kajima Corp Construction method of permanent structure underground exterior wall and earth retaining wall head in inverted construction method
JP2006083610A (en) * 2004-09-16 2006-03-30 Shimizu Corp Inverted construction method
CN101117805A (en) * 2007-08-22 2008-02-06 浙江大学 Underground engineering one-pile multi-use semi reverse construction method
CN101117800A (en) * 2007-08-22 2008-02-06 浙江大学 Method for one-pile-three-use in underground engineering
CN102031785A (en) * 2009-09-24 2011-04-27 上海市第一建筑有限公司 Foundation pit supporting technique for replacing temporary enclosing purlin by using plate belt of permanent structure
CN101718094A (en) * 2009-11-10 2010-06-02 朱奎 Construction method for retaining and protecting foundation pit of building with basemen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104514228A (en) * 2013-09-29 2015-04-15 浙江宝业建设集团有限公司 Large-chassis multi-tower building construction method and structure
CN104088296A (en) * 2014-06-24 2014-10-08 上海市城市建设设计研究总院 Soft soil area basement layer adding construction method
CN104088296B (en) * 2014-06-24 2016-02-10 上海市城市建设设计研究总院 Soft clay area basement adds a layer construction method
CN104120740A (en) * 2014-08-11 2014-10-29 广西壮族自治区冶金建设公司 Construction method for basement construction bottom plate
CN104120740B (en) * 2014-08-11 2015-07-08 广西壮族自治区冶金建设公司 Construction method for basement construction bottom plate
CN104975607A (en) * 2015-07-22 2015-10-14 中建八局第二建设有限公司 Offshore area local deep foundation pit stanching pit construction method
CN105887888A (en) * 2016-04-13 2016-08-24 上海建工建集团有限公司 Layered and fast construction method for foundation pit bottom plate
CN108677963A (en) * 2018-05-23 2018-10-19 中铁第四勘察设计院集团有限公司 A kind of bracing members for base pit engineering stay support joint structure and its construction method
CN113445533A (en) * 2021-07-07 2021-09-28 上海建工一建集团有限公司 Construction method of concrete support embedded bottom plate and support and bottom plate node connecting piece

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Address after: 200120 Shanghai city Pudong New Area Fushan Road No. 33

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