CN101886479B - Underground storey-adding process of frame structural building by one-by-one independent foundation underpinning method - Google Patents

Underground storey-adding process of frame structural building by one-by-one independent foundation underpinning method Download PDF

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CN101886479B
CN101886479B CN201010226555XA CN201010226555A CN101886479B CN 101886479 B CN101886479 B CN 101886479B CN 201010226555X A CN201010226555X A CN 201010226555XA CN 201010226555 A CN201010226555 A CN 201010226555A CN 101886479 B CN101886479 B CN 101886479B
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footing
basement
former
new
building
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CN201010226555XA
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CN101886479A (en
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贾强
张鑫
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山东建筑大学
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Abstract

The invention relates to an underground storey-adding process of a frame structural building by a one-by-one independent foundation underpinning method. In the process, top beams and top supports of the building with a proposed basement and columns and foundations of the completed basement jointly support an upper structure of the building, and then earth excavation and construction of the columns and the foundations of the residual uncompleted basement are continuously carried out. Earth excavation and top support are simultaneously performed; after the original foundations are removed, the load of the upper frame columns is transferred to the adjacent foundations around the columns through the top beams and transferred to earth through the foundations; and after new foundations and an lower ground level underground frame column are constructed, the load of the upper frame columns can be jointly supported by the new foundations, beam supports and the adjacent foundations. Compared with 'a slab foundation underpinning method' in which the upper structure is simply supported by soil mass under slabs, the method is more reliable and can complete underground storey-adding in areas with worse soil property; compared with the underpinning mode of removing the foundations of the whole building simultaneously, the method is more safe; and even though engineering accidents happen, the building is locally but not integrally unstable.

Description

The frame structure building single footing underpins the underground layer process that increases of method by root

Technical field

The present invention relates to a kind of frame structure building single footing and underpin the underground layer process that increases of method by root.

Background technology

The development and use urban underground space is a kind of certainty in the urban development process.Present China city problem such as outmoded, the land resources waste of ubiquity infrastructure all.Developing urban underground space resource in order, rationally, comprehensively, efficiently, is to expand the infrastructure capacity, improves the Comprehensive Disaster Prevention for Cities ability, improves land utilization efficiency and one of the valid approach the most that economizes the land resource.How the new building thing has considered the reasonable utilization of the underground space according to new urban planning and development.And do not have the defective of existing building on function of use of facilities such as basement or underground parking to display day by day: for example along with the increasing of private car, many do not have the residential quarters in parking lot parking difficulty to occur.Many existing old buildings have the demand of the development and use underground space, and along with the development of urbanization process, this demand will be further remarkable.

Beijing's music hall alteration work is the modernization overlay that the reserve part agent structure is carried out on original constructure base, the auditorium of single footing frame construction high basement this project of newly-built one deck 6.5m has been adopted the scheme of " two piles, one post ", promptly dig stake in the post both sides, do apron piece at pile jacking, when doing apron piece the original structure post is wrapped in the beam, make it to become one, allow upper load pass in pile foundation and mat foundation by apron piece with beam.This technology has been applied for the national inventing patent (patent No.: 981231969) at present.This method underpins with pile foundation, the cost height, and also pile foundation taken segment space, and the utilization rate of the underground space is reduced.

" static pressure pile process of construction of existing building basement " (patent No. ZL200710116226.8) that Jia Qiang proposes utilizes pile foundation to underpin the exploitation of carrying out the existing building underground space.And pile foundation underpins the shortcoming with cost height, technical sophistication.

" method for supporting and replacing bed plate foundation " (patent No. ZL200610045257.4) that Jia Qiang proposes utilizes the top board and the base plate conduct of planning to build basement to underpin member, carries out the exploitation of the existing building underground space, needn't use pile foundation, and the cost that underpins is reduced.But simple dependence of this method underpins plate below soil body support superstructure, uses this method in the lower soil property of mucky soil equivalent-load power, may cause structural instability.Therefore, a kind of support and change method that can use in the relatively poor area of soil property of invention is necessary.

Summary of the invention

The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art, provide that a kind of cost is low, technology is simple, frame structure building single footing safe, that be applicable to the relatively poor area of soil property underpins the underground layer process that increases of method by root.

For achieving the above object, the present invention adopts following technical proposals:

A kind of frame structure building single footing underpins the underground layer process that increases of method by root, its utilization plan to build the building of basement back timber, shore and the post and the basic together support superstructure of the good basement of constructing, continue earth excavation and remain the post of basement and the construction on basis after finishing aforementioned techniques, concrete steps are:

(1) planning to build the basic upper position of basement, all primary and secondary beams of promptly constructing at the indoor terrace place of existing building one deck, the primary and secondary beam reliably is connected with the upper box trestle of existing building;

(2) employing that underpins of former single footing is undertaken by root around mediad or from middle order to both sides, at first, excavation intends underpining near the foundation soil in former single footing, cutting depth is to plan to build the floor height of basement, the excavation width is each half post distance around this former single footing, this basis is revealed, and do not influence adjacent former single footing;

(3) limit excavation foundation soil limit is shored with steel pipe and is propped up the top to intending underpining the continuous beam of post, and steel pipe is shored the lower end and is supported on the plank that is laid on ground; Around this former single footing and below foundation soil excavation finish, should the amputation of former single footing, and planning to build the new single footing of basement bottom pouring; After construct in new single footing, pour into a mould the B1 frame column, and link to each other with upper box trestle behind the amputation basis;

(4) behind new single footing and concrete curing of B1 frame column and the stripping, repeating step (2), (3), (4), carry out amputation and the new single footing and the construction of B1 frame column of next former single footing, finish until new single footing of whole B1s and the construction of B1 frame column;

(5) will plan to build basement roof or base plate polishing.

A kind of frame structure building single footing underpins the underground layer process that increases of method by root, its utilization is planned to build back timber, the top board of the building of basement and is shored and the post and the basic together support superstructure of the good basement of constructing, continue earth excavation and remain the post of basement and the construction on basis after finishing aforementioned techniques, concrete steps are:

(1) planning to build the basic upper position of basement, all primary and secondary beams of promptly constructing at the indoor terrace place of existing building one deck, the primary and secondary beam reliably is connected with the post of existing building; During construction terrace primary and secondary beam, pour into a mould basement roof together simultaneously, can reduce the underground influence that increases layer construction to existing building resident production and life;

(2) employing that underpins of former single footing is undertaken by root around mediad or from middle order to both sides, at first, excavation intends underpining near the foundation soil in former single footing, cutting depth is to plan to build the floor height of basement, the excavation width is each half post distance around this former single footing, this basis is revealed, and do not influence adjacent former single footing;

(3) limit excavation foundation soil limit is shored with steel pipe and is propped up the top to intending underpining post continuous beam, plate, and steel pipe is shored the lower end and is supported on the plank that is laid on ground; Around this former single footing and below foundation soil excavation finish, should the amputation of former single footing, and planning to build the new single footing of basement bottom pouring; After construct in new single footing, pour into a mould the B1 frame column, and link to each other with upper box trestle behind the amputation basis;

(4) behind new single footing and concrete curing of B1 frame column and the stripping, repeating step (2), (3), (4), carry out amputation and the new single footing and the construction of B1 frame column of next former single footing, finish until new single footing of whole B1s and the construction of B1 frame column;

(5) will plan to build the base plate polishing of basement.

When adopting second kind of technical scheme among the present invention, execution conditions such as the basement roof construction back transport of materials in the step 1), cubic metre of earth transportation, on-the-spot illumination can be restricted the speed of influence construction.

Limit of the present invention earth excavation, the top is propped up on the limit.After the former basic amputation, the basis of the load of upper box trestle by facing mutually around the back timber transmission, and be delivered in the soil body by the basis.After new basis and the construction of B1 frame column, can be by new basis, beam lower support and the load that faces basic together support upper box trestle mutually.(ZL200610045257.4) more reliable than simple rely on " method for supporting and replacing bed plate foundation " of soil body support superstructure under the plate, can finish the underground layer that increases in the relatively poor area of soil property.

In addition, poured into a mould new basis after previous basic amputation, just therefore the next basis of excavation and amputation is referred to as " single footing underpins method by root " at every turn.Compare much safe with the mode of underpining on whole building amputation simultaneously basis.Even engineering accident occurs also is local, can not cause the whole unstability of building.

Description of drawings

Fig. 1 is the post net of frame structure building of the present invention and the layout plan of single footing;

Fig. 2 is the underground preceding I-I sectional drawing of layer that increase of Fig. 1 middle frame construction;

Fig. 3 is the underground preceding II-II sectional drawing of layer that increase of Fig. 1 middle frame construction;

Fig. 4 is the I-I sectional drawing behind top board and the back timber of having constructed among Fig. 1;

Fig. 5 is the II-II sectional drawing behind top board and the back timber of having constructed among Fig. 1;

Fig. 6 is the I-I sectional drawing behind soil excavation among Fig. 1, a top and amputation first pile foundation;

Fig. 7 is the II-II sectional drawing behind soil excavation among Fig. 1, a top and amputation first pile foundation;

Fig. 8 is the I-I sectional drawing behind the new basis of cast, B1 frame column and amputation second pile foundation among Fig. 1;

Fig. 9 is the II-II sectional drawing behind the new basis of cast, B1 frame column and amputation second pile foundation among Fig. 1;

Figure 10 is the order that underpins around mediad;

Figure 11 is from the middle order that underpins to both sides;

Among the figure: 1, upper box trestle, 2, former single footing, 3, foundation soil, 4, basement roof, 5, steel pipe shores, 6, new single footing, 7, the B1 frame column.

The specific embodiment

The present invention is further described below in conjunction with drawings and Examples.

Embodiment 1: a kind of frame structure building single footing underpins the underground layer process that increases of method by root, its utilization plan to build the building of basement back timber, shore and the post and the basic together support superstructure of the good basement of constructing, continue earth excavation and remain the post of basement and the construction on basis after finishing aforementioned techniques, concrete steps are:

(1) planning to build the basic upper position of basement, all primary and secondary beams of promptly constructing at the indoor terrace place of existing building one deck, the primary and secondary beam reliably is connected with the upper box trestle 1 of existing building;

(2) employing that underpins of former single footing 2 is undertaken by root around mediad or from middle order to both sides, at first, the excavation plan underpins near the foundation soil 3 the former single footing 2, cutting depth is to plan to build the floor height of basement, the excavation width is each half post distance around this former single footing 2, this basis is revealed, and do not influence adjacent former single footing 2;

(3) limit excavation foundation soil 3 limits are shored 5 pairs of plans with steel pipe and are underpined the beam that post links to each other and prop up the top, and steel pipe is shored 5 lower ends and is supported on the plank that is laid on ground; Around this former single footing 2 and below foundation soil 3 excavations finish, should 2 amputation of former single footing, and planning to build the new single footing 6 of basement bottom pouring; After construct in new single footing 6, pour into a mould B1 frame column 7, and link to each other with upper box trestle 1 behind the former single footing 2 of amputation;

(4) behind new single footing 6 and 7 concrete curings of B1 frame column and the stripping, repeating step (2), (3), (4), carry out amputation and the new single footing 6 and 7 constructions of B1 frame column of next former single footing 2, finish until new single footing 6 of whole B1s and 7 constructions of B1 frame column;

(5) will plan to build basement roof 4 or base plate polishing.

Embodiment 2: a kind of frame structure building single footing underpins the underground layer process that increases of method by root, its utilization is planned to build back timber, the top board of the building of basement and is shored and the post and the basic together support superstructure of the good basement of constructing, continue earth excavation and remain the post of basement and the construction on basis after finishing aforementioned techniques, concrete steps are:

(1) planning to build the basic upper position of basement, all primary and secondary beams of promptly constructing at the indoor terrace place of existing building one deck, the primary and secondary beam reliably is connected with existing building upper box trestle 1; During construction terrace primary and secondary beam, pour into a mould basement roof 4 together simultaneously, can reduce the underground influence that increases layer construction to existing building resident production and life;

(2) employing that underpins of former single footing 2 is undertaken by root around mediad or from middle order to both sides, at first, the excavation plan underpins near the foundation soil 3 the former single footing 2, cutting depth is to plan to build the floor height of basement, the excavation width is each half post distance around this former single footing 2, this basis is revealed, and do not influence adjacent former single footing 2;

(3) limit excavation foundation soil 3 limits are shored 5 pairs of plans with steel pipe and are underpined beam, the plate that post links to each other and prop up the top, and the steel pipe lower end is supported on the plank that is laid on ground; Around this former single footing 2 and below foundation soil excavation finish, should 2 amputation of former single footing, and planning to build the new single footing 6 of basement bottom pouring; After construct in new single footing 6, pour into a mould B1 frame column 7, and link to each other with upper box trestle 1 behind the former single footing 2 of amputation;

(4) behind new single footing 6 and 7 concrete curings of B1 frame column and the stripping, repeating step (2), (3), (4), carry out amputation and the new single footing 6 and 7 constructions of B1 frame column of next former single footing 2, finish until new single footing 6 of whole B1s and 7 constructions of B1 frame column;

(5) will plan to build the base plate polishing of basement.

When adopting this technical scheme, execution conditions such as the basement roof construction back transport of materials in the step 1), cubic metre of earth transportation, on-the-spot illumination can be restricted the speed of influence construction.

Claims (2)

1. a frame structure building single footing underpins the underground layer process that increases of method by root, it is characterized in that: its utilization plan to build the building of basement back timber, shore and the post and the basic together support superstructure of the good basement of constructing, continue earth excavation and remain the post of basement and the construction on basis after finishing aforementioned techniques, concrete steps are:
(1) planning to build the basic upper position of basement, all primary and secondary beams of promptly constructing at the indoor terrace place of existing building one deck, the primary and secondary beam reliably is connected with the upper box trestle of existing building;
(2) employing that underpins of former single footing is undertaken by root around mediad or from middle order to both sides, at first, excavation intends underpining near the foundation soil in former single footing, cutting depth is to plan to build the floor height of basement, the excavation width is each half post distance around this former single footing, this basis is revealed, and do not influence adjacent former single footing;
(3) limit is excavated the beam of shoring linking to each other with the upper box trestle with steel pipe on the foundation soil limit and is propped up the top, and steel pipe is shored the lower end and is supported on the plank that is laid on ground; Around this former single footing and below foundation soil excavation finish, should the amputation of former single footing, and planning to build the new single footing of basement bottom pouring; After construct in new single footing, pour into a mould the B1 frame column, and link to each other with upper box trestle behind the amputation basis;
(4) behind new single footing and concrete curing of B1 frame column and the stripping, repeating step (2), (3), (4), carry out amputation and the new single footing and the construction of B1 frame column of next former single footing, finish until new single footing of whole B1s and the construction of B1 frame column;
(5) will plan to build basement roof or base plate polishing.
2. a frame structure building single footing underpins the underground layer process that increases of method by root, it is characterized in that: its utilization is planned to build back timber, the top board of the building of basement and is shored and the post and the basic together support superstructure of the good basement of constructing, continue earth excavation and remain the post of basement and the construction on basis after finishing aforementioned techniques, concrete steps are:
(1) planning to build the basic upper position of basement, all primary and secondary beams of promptly constructing at the indoor terrace place of existing building one deck, the primary and secondary beam reliably is connected with the upper box trestle of existing building; During construction terrace primary and secondary beam, pour into a mould basement roof together simultaneously, can reduce the underground influence that increases layer construction to existing building resident production and life;
(2) employing that underpins of former single footing is undertaken by root around mediad or from middle order to both sides, at first, excavation intends underpining near the foundation soil in former single footing, cutting depth is to plan to build the floor height of basement, the excavation width is each half post distance around this former single footing, this basis is revealed, and do not influence adjacent former single footing;
(3) limit is excavated beam, the plate shored linking to each other with the upper box trestle with steel pipe on the foundation soil limit and is propped up the top, and steel pipe is shored the lower end and is supported on the plank that is laid on ground; Around this former single footing and below foundation soil excavation finish, should the amputation of former single footing, and planning to build the new single footing of basement bottom pouring; After construct in new single footing, pour into a mould the B1 frame column, and link to each other with upper box trestle behind the amputation basis;
(4) behind new single footing and concrete curing of B1 frame column and the stripping, repeating step (2), (3), (4), carry out amputation and the new single footing and the construction of B1 frame column of next former single footing, finish until new single footing of whole B1s and the construction of B1 frame column;
(5) will plan to build the base plate polishing of basement.
CN201010226555XA 2010-07-14 2010-07-14 Underground storey-adding process of frame structural building by one-by-one independent foundation underpinning method CN101886479B (en)

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CN106088650A (en) * 2016-07-19 2016-11-09 山东建筑大学 A kind of building with brick-concrete structure underground that is applicable to increases method and the building of layer

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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
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
CN103806435A (en) * 2012-11-09 2014-05-21 贵阳铝镁设计研究院有限公司 Terrace subsidence treatment method and terrace structure
CN103195085B (en) * 2013-04-02 2015-01-28 东南大学 Downward story-adding basement and construction method thereof
CN103397667A (en) * 2013-07-09 2013-11-20 北京筑福国际工程技术有限责任公司 Existing building direct storey-adding foundation structure and construction method thereof
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
CN104453274B (en) * 2014-11-25 2016-02-17 山东建筑大学 Utilize supporting and protection structure and underpinning structure to support existing building underground and increase layer method
CN107119917B (en) * 2015-05-19 2018-12-14 叶长青 Increase the construction method of basement structure behind strip footing house
CN105464206A (en) * 2015-12-24 2016-04-06 深圳市建筑设计研究总院有限公司 Basement bottom plate structure
CN106245927B (en) * 2016-07-19 2018-06-01 山东建筑大学 A kind of method and building suitable for frame structure building underground increasing layer
CN107035159B (en) * 2017-05-05 2018-12-21 山东建筑大学 A method of suitable for frame structure isolated footing building underground increasing layer
CN107143149B (en) * 2017-05-24 2019-02-15 广东省建筑科学研究院集团股份有限公司 A kind of existing masonry structure building adds the construction method of basement
CN108643600A (en) * 2018-04-27 2018-10-12 湖南城市学院 A method of being suitable for building with brick-concrete structure underground increasing layer

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CN1078294C (en) * 1998-12-11 2002-01-23 北京市第七城市建设工程公司 Integral foundation underpinning technology for building added floor
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CN106088650A (en) * 2016-07-19 2016-11-09 山东建筑大学 A kind of building with brick-concrete structure underground that is applicable to increases method and the building of layer

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