CN1078294C - Integral foundation underpinning technology for building added floor - Google Patents

Integral foundation underpinning technology for building added floor Download PDF

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Publication number
CN1078294C
CN1078294C CN 98123196 CN98123196A CN1078294C CN 1078294 C CN1078294 C CN 1078294C CN 98123196 CN98123196 CN 98123196 CN 98123196 A CN98123196 A CN 98123196A CN 1078294 C CN1078294 C CN 1078294C
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CN
China
Prior art keywords
original
building
post
mass
floor
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CN 98123196
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Chinese (zh)
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CN1257149A (en
Inventor
王雅斋
邱仓虎
刘国柱
詹永勤
梁新利
皮绍刚
曹建亚
秦玉康
张玲
杜文库
荆树成
Original Assignee
北京市第七城市建设工程公司
中国建筑科学研究院综合设计研究所
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Priority to CN 98123196 priority Critical patent/CN1078294C/en
Publication of CN1257149A publication Critical patent/CN1257149A/en
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Publication of CN1078294C publication Critical patent/CN1078294C/en

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Abstract

The present invention relates to an integral foundation underpinning technique of an added storey of a building, which comprises the construction steps that (1). a new pile or an underground continuous wall is arranged on a pile with an original structure (2). a continuous apron piece is made to connect the pile with the original structure with the new pile; (3). the original structure is strengthened; (4). earthwork excavation is carried out; (5). a plinth with an original structure is disassembled; (6). A second-step earthwork is carried out in the mode of sectional excavation, and a mat base or a box base is made and is constructed with the bottom of the new pile; (7). the construction of overground and underground added storey structures of the building is completed. The present invention reserves the body of the original building, increases use area and saves engineering cost. The present invention is suitable for modifying various buildings, protecting old buildings and developing urban underground space.

Description

The mass-type foundation underpinning technique of floor addition of building
The present invention relates to a kind of working measure, relate in particular to the underground construction technology that adds layer of a kind of building existing building.
Domestic and international existing floor addition of building construction technology is a Yan Gaojia layer on surface buildings, and its development generally is subjected to the restriction of bearing capacity of foundation soil and original structure self bearing capacity more.For some original appearances on the ground that both needed protection, require large tracts of land to expand the building historical relic of usage space again, extra floor building can only be added in underground, and just need to be purpose with the floor addition of building underpin the mass-type foundation of building for this.Chinese patent CN1145439A and CN1113282A utilize original base to do support, and building is carried out local foundation underpinning or building is carried out the method that local pile foundation reinforcement underpins.Concrete support and change method is that it(?) need the place of underpining in the part do new stake to change former post or stick with glue agent at former cushion cap side dowel, does underpinned pile, the purpose that reaches local underpin or underpin behind the expansion cushion cap.These two kinds of methods can not be applicable to that original base can't utilize, need preserve the building original appearance, must do that mass-type foundation underpins and realize the underground engineering that adds layer at the place of underpining whole building.
The mass-type foundation underpinning technique that the purpose of this invention is to provide a kind of floor addition of building, preserved building thing original appearance underpins the original building mass-type foundation, realizes building ground or the underground layer that adds, and expands space.
The scheme of the mass-type foundation underpinning technique of floor addition of building of the present invention has following construction sequence:
(1). make new stake or diaphragm wall on original structure post next door;
(2). make continuous apron piece, original structure post and new stake are coupled together, stake, post, beam are become one, allow upper load pass in stake by apron piece earlier;
(3). make original structure and reinforce;
(4). first step soil excavation;
(5). remove the original structure base for post;
(6). the second step cubic metre of earth excavation section by section, raft foundation beam and raft foundation or case base are made in segmentation, and all new stakes are coupled together in bottom and raft foundation, make it bear load of buildings;
(7). finish building ground, the construction of underground adding storey structure.
The practice of the new stake in the above-mentioned steps (1) is to jump every post with manually digging hole or machine drilling symmetry to do, and first new stake has been built after concrete grade reaches 30% or more, carries out second batch of new pile driving construction, during hand excavated pile, does earlier to do behind the retaining wall newly.
Continuous cushion cap beam main tendon penetrates the original structure shaft in the above-mentioned steps (2), uses resin anchoring, intersects the node place at continuous apron piece and original structure post, increases horizontal anchor bar along original structure post periphery.When running into the original structure patten, the secondary apron piece is made in the part, and in the end removes.
Be to add the steel bar concrete ring at the original structure post in the above-mentioned steps (3), become reinforced column, first floor original structure is reinforced and also can be done the first road Vierendeel girder and the reinforcing of first floor post on the ground, with reinforcement expansion method of section and at original structure shaft anchor shear reinforcement
In the above-mentioned steps (5), remove original structure base for post part with Mechanical Method or quiet blasting procedure.
Adopt symmetrical balance excavation method in the above-mentioned steps (6).
In the above-mentioned steps (6) all new stakes are coupled together with pre-buried steel part and raft foundation in the bottom, place shearing resistance unloading steel pin key at the sole plate absolute altitude place of new stake.
Advantage of the present invention is: both kept the original building body, newly-increased in a large number again usable floor area is saved construction cost more than 40% than new construction.Be applicable to the transformation of all kinds of buildings, protect ancient building, the exploitation urban underground space plays a greater role existing building.
Below in conjunction with drawings and Examples the present invention is described in detail:
Fig. 1 is a job practices schematic diagram of the present invention.
Fig. 2 is the logical original structure shaft of wearing of the continuous cushion cap beam main tendon of the present invention, with the schematic diagram of resin anchoring.
Fig. 3 is the structural representation of continuous apron piece of the present invention and local two secondary apron pieces
Fig. 4 is that the quiet blasting procedure of the present invention is removed original structure patten embodiment schematic diagram.
Fig. 5 is that original structure post of the present invention is reinforced schematic diagram.
Fig. 6 is that the original structure of the first floor of the present invention is reinforced schematic diagram.
Fig. 7 is that raft foundation construction schematic diagram is made in earthwork excavation section by section of the present invention and segmentation.
Embodiment: Beijing music hall alteration work, the owner requires that the building structure main body is motionless, the building overall height is constant, spectators' seat increases, increases the film Room, multi function hall, little assembly hall, VIP Room, hall for spectators to rest in, adds Air Conditioning Facilities, fire cistern system, increase-volume switchgear house, elevator stage, storehouse, other management room.24 on this project original structure post.Step (1) is done 48 new stakes altogether in two new stakes 2 of each original structure post 1 other do; New available manually digging hole of stake or machine drilling symmetry are jumped to dig every post and are done castinplace pile, and first new stake has been built after concrete grade reaches more than 30%, carries out second batch of new pile driving construction.During hand excavated pile, can make retaining wall earlier.
(2). make continuous apron piece 3, original structure post and new stake are coupled together, stake, post, beam are become one, cushion cap beam main tendon 4 penetrates the original structure shaft, with resin 9 anchorings.Apron piece is when running into the original structure patten continuously, and secondary apron piece 15 is made in the part, and secondary apron piece 15 is in the end removed.Intersect the node place at apron piece and original structure post, increase horizontal anchor bar 8 along original structure post periphery.
(3). making original structure and reinforce, is to make reinforced column 6 at original structure post external reinforcement steel bar concrete ring; The original structure of the first floor is reinforced and also can be done the first road Vierendeel girder 7 and the reinforcing of first floor post on the ground, expands method of section with reinforcement, is anchored a shear reinforcement 13 and a circle tension diagonal bar 14 at the original structure shaft, uses resin anchoring.
(4). first step soil excavation.
(5). remove original structure base for post 10 with Mechanical Method or quiet blasting procedure.The method of quiet blasting procedure is that first water bores punching 11, disconnects that base for post connects with apron piece and being connected of original structure base for post and new stake, then with Churn drill in original structure base for post boring 12, fill high-efficiency expanding agent, the dismounting of static blasting at last.
(5). adopt symmetrical balance excavation method to carry out the second step cubic metre of earth excavation section by section, raft foundation beam and raft foundation 5 or case base are made in segmentation, and all new stakes are built together in bottom and raft foundation, connect with built-in fitting, place shearing resistance unloading steel pin key at the sole plate absolute altitude place of new stake, make it bear load of buildings.
(7). make basement wall and top plate-girder 16, and be connected with continuous apron piece, finish building on the ground and the underground layer that adds construct.This embodiment increases basement 4000m newly 2, be 2.2 times of original structure projected area.

Claims (11)

1, a kind of mass-type foundation underpinning technique of floor addition of building is characterized in that following construction sequence is arranged:
(1). make new stake or diaphragm wall on original structure post next door;
(2). make continuous apron piece, original structure post and new stake are coupled together, stake, post, beam are become one;
(3). make original structure and reinforce;
(4). first step soil excavation;
(5). remove the original structure patten;
(6). the second step cubic metre of earth excavation section by section, raft foundation beam and raft foundation or case base are made in segmentation, and all new stakes are coupled together in bottom and raft foundation, make it bear load of buildings;
(7). finish building ground, the construction of underground adding storey structure.
2, the mass-type foundation underpinning technique of floor addition of building according to claim 1, it is characterized in that: the practice of the new stake in the described step (1) is to jump every post with manually digging hole or machine drilling symmetry to do, first new stake has been built after concrete grade reaches more than 30%, carries out second batch of new pile driving construction.
3, the mass-type foundation underpinning technique of floor addition of building according to claim 1 is characterized in that: the cushion cap beam main tendon penetrates the original structure shaft in the described step (2), uses resin anchoring.
4, the mass-type foundation underpinning technique of floor addition of building according to claim 1 is characterized in that: when running into the original structure base for post, the secondary apron piece is made in the part in the described step (2), and in the end removes.
5, the mass-type foundation underpinning technique of floor addition of building according to claim 1 is characterized in that: intersect the node place at apron piece and original structure post in the described step (2), increase horizontal anchor bar along original structure post periphery.
6, the mass-type foundation underpinning technique of floor addition of building according to claim 1 is characterized in that: be to add the steel bar concrete ring at the original structure post to become reinforced column in the described step (3).
7, the mass-type foundation underpinning technique of floor addition of building according to claim 1, it is characterized in that: the original structure of first floor reinforcing on the ground is to do the first road Vierendeel girder and the reinforcing of first floor post in the described step (3), expand method of section with reinforcement, be anchored shear reinforcement at the original structure shaft.
8, the mass-type foundation underpinning technique of floor addition of building according to claim 1 is characterized in that: in the described step (5), remove original structure base for post part with Mechanical Method or quiet blasting procedure.
9, the mass-type foundation underpinning technique of floor addition of building according to claim 1 is characterized in that: soil excavation adopts symmetrical balance excavation method in the described step (5).
10, the mass-type foundation underpinning technique of floor addition of building according to claim 1, it is characterized in that: in the described step (6) all new stakes are coupled together with pre-buried steel part and raft foundation in the bottom, place shearing resistance unloading steel pin key at the sole plate absolute altitude place of new stake.
11, the mass-type foundation underpinning technique of floor addition of building according to claim 2 is characterized in that: during described hand excavated pile, do earlier to do new stake behind the retaining wall.
CN 98123196 1998-12-11 1998-12-11 Integral foundation underpinning technology for building added floor CN1078294C (en)

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Application Number Priority Date Filing Date Title
CN 98123196 CN1078294C (en) 1998-12-11 1998-12-11 Integral foundation underpinning technology for building added floor

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Application Number Priority Date Filing Date Title
CN 98123196 CN1078294C (en) 1998-12-11 1998-12-11 Integral foundation underpinning technology for building added floor

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CN1078294C true CN1078294C (en) 2002-01-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100383349C (en) * 2005-09-06 2008-04-23 贵阳铝镁设计研究院 Method for reconstructing operation platform column foundation in existing workshop
CN100396855C (en) * 2005-09-07 2008-06-25 贵阳铝镁设计研究院 Existing one-storied factory continuation end foundation construction method
CN1967121B (en) * 2005-11-16 2010-04-21 烟台鲁宝钢管有限责任公司 Expansion rebuilding method for ring furnace

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CN100443672C (en) * 2006-03-08 2008-12-17 中铁隧道集团有限公司 Underpinning method of pile ground underground
CN100439634C (en) * 2006-07-20 2008-12-03 上海建工股份有限公司 Horizontal force transfer method for underground building modification
CN101806040B (en) * 2010-03-25 2012-05-30 徐国彬 Underpinning device and method for bridge and building
CN101886479B (en) * 2010-07-14 2011-09-28 山东建筑大学 Underground storey-adding process of frame structural building by one-by-one independent foundation underpinning method
CN102182325B (en) * 2011-03-28 2012-08-22 东南大学 Storey adding method for existing building basement with frame structure and independent foundation
CN102220769A (en) * 2011-04-15 2011-10-19 上海天演建筑物移位工程有限公司 System and method for underpinning and jacking building and adding storeys downwards
CN102733429A (en) * 2012-06-29 2012-10-17 广州市胜特建筑科技开发有限公司 Underpinning method for new tunnel to pass through existing building and underpinning system
CN102864946B (en) * 2012-10-23 2014-07-16 山东建筑大学 Process for supporting existing buildings through structural steel and horizontal rachel rod member and additionally adding multilayer basement
CN103104102B (en) * 2013-01-31 2015-07-01 中国建筑第八工程局有限公司 Construction method for underground storey-addition reconstruction
CN103437567B (en) * 2013-08-30 2015-06-10 山东建筑大学 Method for supporting existing building underground added storey through original pile foundations
CN105155867B (en) * 2015-09-30 2017-05-31 贵州正业工程技术投资有限公司 A kind of underpinning device of the existing large diameter pile building of Tunnel Passing
KR101743758B1 (en) * 2016-07-25 2017-06-05 이엑스티 주식회사 Downward construction method for vertical extension of building using base block
CN108331367A (en) * 2016-07-26 2018-07-27 朱奎 The Basement reconstruction structure of raft foundation
CN106285032B (en) * 2016-07-26 2018-12-14 朱奎 Basement reconstruction construction with raft foundation building
CN106639346B (en) * 2016-10-10 2019-01-29 上海岩土工程勘察设计研究院有限公司 A kind of downward increasing layer construction method of existing building using diagonal brace underpinning structure
CN107642252B (en) * 2017-09-21 2019-09-10 青岛静力工程股份有限公司 Old building free removal is double to increase rebuilding construction technique
CN108798065B (en) * 2018-06-20 2020-08-07 桐乡市乌镇内利仿古园林建设有限公司 Integral jacking method for ancient building

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100383349C (en) * 2005-09-06 2008-04-23 贵阳铝镁设计研究院 Method for reconstructing operation platform column foundation in existing workshop
CN100396855C (en) * 2005-09-07 2008-06-25 贵阳铝镁设计研究院 Existing one-storied factory continuation end foundation construction method
CN1967121B (en) * 2005-11-16 2010-04-21 烟台鲁宝钢管有限责任公司 Expansion rebuilding method for ring furnace

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