CN101173520A - Method for differential settlement of buildings self-adapting groundwork and its structure - Google Patents

Method for differential settlement of buildings self-adapting groundwork and its structure Download PDF

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Publication number
CN101173520A
CN101173520A CNA200710133619XA CN200710133619A CN101173520A CN 101173520 A CN101173520 A CN 101173520A CN A200710133619X A CNA200710133619X A CN A200710133619XA CN 200710133619 A CN200710133619 A CN 200710133619A CN 101173520 A CN101173520 A CN 101173520A
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CN
China
Prior art keywords
frame
reinforced concrete
adapting
concrete foundation
differential settlement
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CNA200710133619XA
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Chinese (zh)
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CN101173520B (en
Inventor
夏军武
常鸿飞
柏建彪
陆亚萍
谢伟
郑玉莹
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN200710133619XA priority Critical patent/CN101173520B/en
Publication of CN101173520A publication Critical patent/CN101173520A/en
Application granted granted Critical
Publication of CN101173520B publication Critical patent/CN101173520B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to an adaptive method and structure for buildings to uneven foundation subsidence, which is suitable for frame buildings in uneven subsidence areas caused by underground mining. The invention is characterized in that: a frame bracket with relative motion is connected between a reinforced concrete foundation and a column base of a frame, the base of the frame bracket is fixed with the reinforced concrete foundation, the footstock of the frame bracket is fixed with the column base of the frame; when uneven subsidence occurs, the frame bracket is elongated as the subsidence of the reinforced concrete foundation; the influence of the uneven subsidence is eliminated by the utilization of the automatic elongation of the frame bracket, thus, the breakage of the frame buildings due to the uneven subsidence of the groundsill is decreased and the reliability of the integral structure is enhanced. The invention has the advantages that the frame bracket has the self adaptive performance that the frame bracket can be elongated as the subsidence of the reinforced concrete foundation; furthermore, the frame bracket has the advantages of high sensitivity, simple method and structure, easy assembly and dismounting, low construction cost, high compression resistance, bending resistance, shear resistance and bearing capacity, and free replacement and maintenance.

Description

The method of differential settlement of buildings self-adapting groundwork and structure thereof
Technical field
The present invention relates to the method and the structure thereof of differential settlement of buildings self-adapting groundwork, be particularly useful for the frame structure building in the area of differential settlement significantly that underground mining causes, also be applicable to the frame structure building on other differential settlement ground.
Background technology
The building of frame construction is used very extensive in China, but the poor-performing of pure frame structure opposing ground inhomogeneous deformation, differential settlement can cause that the beam column of frame construction produces bigger additional internal force and additional deformation.Therefore, China's " Code for design of building " (GB50007-2002) the 5.3rd joint provides relevant limit to structure foundation distortion permissible value, and 5.3.3 bar regulation should be by the differential settlement control of adjacent base for post for frame construction and individual layer bent structure.Having limited frame structure building is applied on the ground of differential settlement distortion.
The measure that reduces differential settlement at present is to arrange from building to avoid the differential settlement ground on the one hand, be structurally to take to increase soil rigidity on the other hand, strengthen beam cross-section, grade beam etc. is set, these two kinds of measures all are to reduce differential settlement with " hard anti-" as the measure of dominant ideas, though can play certain effect, but its complex structure, mounting or dismounting are difficult for, and have increased considerably the cost of building.
Summary of the invention
In view of the problem that prior art exists, it is simple to the purpose of this invention is to provide a kind of method and structure, the method and the structure thereof of the differential settlement of buildings self-adapting groundwork that mounting or dismounting are convenient, construction costs is low, resistance to compression, bending resistance and shear-carrying capacity are high.
The method of differential settlement of buildings self-adapting groundwork of the present invention is: build reinforced concrete foundation on firm ground, fixed frame suspension column on reinforced concrete foundation, between described reinforced concrete foundation and framework suspension column, be connected a frame supporter with relative motion, when adapting to asymmetry settlement of foundation, the basis sinks thereupon, frame supporter is with its automatic elongation, the framework suspension column remains stable, and the maximum elongation amount of frame supporter can be determined according to the on-the-spot actual maximum uneven subsidence amount design of estimating.
The structure of differential settlement of buildings self-adapting groundwork of the present invention, comprise reinforced concrete foundation that is located on the firm ground and the framework suspension column that is fixed on the basis, between described basis and framework suspension column, be provided with frame supporter with relative motion, the base and the reinforced concrete foundation of frame supporter are fixed together, and the footstock of frame supporter and framework suspension column are fixed together.
Described frame supporter is the bearing of cross groove by inwall and constitutes with the criss-cross plunger jig that is that the bearing groove is interlocked, wherein be and be respectively equipped with many row's Elastip pins on the bearing inwall of cross groove, be to be respectively equipped with on the corresponding boss of criss-cross plunger jig and be suitable for the multistage pin chute that Elastip pin glides; The bottom of bearing is provided with the chassis that connects the basis, bottom, and the top of jig is provided with taking over a business of connecting frame suspension column bottom; The described bearing middle part of cross groove that is is for circular; The described criss-cross plunger jig middle part that is is for to be welded cylindrical by steel plate and arc plate.
The present invention is connected the frame supporter of a differential settlement of buildings self-adapting groundwork between each basis and framework suspension column, this frame supporter can be extended with immerge, the maximum elongation amount can reach 300mm, to adapt to ground when the inhomogeneous deformation, still the invariant position that keeps the framework suspension column, thereby reduce influence and the destruction of inhomogeneous deformation, for the application better of frame construction provides assurance to frame construction.This frame supporter has bigger resistance to compression, bending resistance and shear-carrying capacity, under the axial tension effect, can extend automatically, with sinking with stretching, and remain its resistance to compression bending resistance and shear-carrying capacity, higher sensitivity is arranged, in case producing, differential settlement can utilize the influence of the automatic elongation elimination differential settlement of bearing from dynamic response.This structure is positioned at the post base plinth top of frame construction, be connected with bolt with the single footing with frame column, be convenient to installation and removal, and can change at any time and safeguard, be specially adapted to the area of the differential settlement significantly that underground mining causes, its method and structure is simple, and mounting or dismounting are convenient, construction costs is low, have practicality widely.
Description of drawings
Fig. 1 is the frame supporter schematic layout pattern of differential settlement of buildings self-adapting groundwork of the present invention,
Wherein: (a) be firm ground frame construction schematic diagram;
(b) be uneven settlement of foundation afterframe structural bearings elongation schematic diagram.
Fig. 2 is the front view of Fig. 1 middle frame seat structure.
Fig. 3 is the vertical view of Fig. 2 middle frame seat structure.
Among the figure: the 1-ground, the 2-reinforced concrete foundation, the 3-frame supporter, 4-framework suspension column, 5-plunger jig, the 6-bearing, 7-pin chute, the 8-pin, the 9-spring pin, the 10-notch, the 11-chassis, 12-takes over a business.
The specific embodiment
The method of differential settlement of buildings self-adapting groundwork of the present invention is: original reinforced concrete foundation 2 and and its framework suspension column 4 that fixes between be provided with one and have relative motion, the frame supporter 3 that can longitudinally be elongated, when ground 1 changes, reinforced concrete foundation 2 changes with it, frame supporter 3 is followed reinforced concrete foundation 2 sinkings and is elongated, basis 2 sinks thereupon when sinking to adapt to ground 1, frame supporter 3 is extended automatically, thereby it is stable that framework suspension column 4 is remained, and the elongation of frame supporter 3 can be determined according to the on-the-spot actual maximum uneven subsidence amount design of estimating.
The structure of differential settlement of buildings self-adapting groundwork of the present invention, shown in Fig. 1 (a), it is made of with the framework suspension column 4 that links to each other with frame supporter 3 frame supporter 3 that is located at reinforced concrete foundation 2 on the firm ground 1, be connected on the basis 2, the base of frame supporter 3 and reinforced concrete foundation 2 are fixed together, and the footstock of frame supporter 3 and framework suspension column 4 are fixed together.When ground 1 produces differential settlement, drive reinforced concrete base 2 uneven subsidences and spur frame supporter 3 elongations, and fixing to offset the part differential settlement.Because the amount difference of each reinforced concrete base 2 differential settlement, the height that each frame supporter 3 is elongated is also inequality, and shown in Fig. 1 (b), the elongation of frame supporter 3 can be Δ h 1, also can Δ h 2If when being 200mm or 300mm according to the on-the-spot actual maximum uneven subsidence amount of estimating, the maximum elongation amount of all frame supporter 3 designs all can reach 200mm or 300mm.
Fig. 2 and shown in Figure 3, frame supporter 3 constitutes by bearing 6 with plunger jig 5 that bearing 6 fastens, bearing 6 inwalls are cross groove, plunger jig 5 is the cross plunger, bearing 6 is the middle part of cross groove for circular, and circular port is an arc with the cross groove junction respectively, and the bottom of bearing 6 is provided with the chassis 11 of connecting reinforcement concrete foundation 2, bearing 6 is to be respectively equipped with in criss-cross four grooves to arrange Elastip pins 8 more, and Elastip pin 8 is made of steel ball and spring.Be respectively equipped with on jig 7 corresponding four boss and be suitable for the multistage pin chute 7 that Elastip pin 8 glides; Plunger jig 5 tops are provided with takes over a business 12 at the bottom of connecting frame suspension column 4 posts.Plunger jig 5 is welded by steel plate and arc plate, is criss-cross plunger middle part for cylindrical, and cylinder is an arc with the cross groove junction respectively, and bearing 6 provides sliding rail for plunger jig 5.When foundation settlement drives bearing 6 sinkings, notch 10 is pushed pin 8 and extrusion spring 9 open, when pin 8 is positioned at the opening of notch 10 just, spring 9 can be released pin 8 automatically and be stuck in the notch 10, stop plunger jig 5 to sink with bearing 6, elongation gradually thus, frame column pin 4 remains stablely when sinking to adapt to ground 1, eliminates the influence of differential settlement.

Claims (5)

1. the method for differential settlement of buildings self-adapting groundwork, on firm ground (1), build reinforced concrete foundation (2), go up fixed frame suspension column (4) at reinforced concrete foundation (2), it is characterized in that: between described reinforced concrete foundation (2) and framework suspension column (4), be connected a frame supporter (3) with relative motion, when adapting to ground (1) uneven subsidence, basis (2) sinks thereupon, frame supporter (3) is with its automatic elongation, framework suspension column (4) remains stable, and the maximum elongation amount of frame supporter (3) can be determined according to the on-the-spot actual maximum uneven subsidence amount design of estimating.
2. the structure of differential settlement of buildings self-adapting groundwork, comprise the reinforced concrete foundation (2) that is located on the firm ground (1) and be fixed on framework suspension column (4) on the basis (2), it is characterized in that: between described basis (2) and framework suspension column (4), be provided with frame supporter (3) with relative motion, the base of frame supporter (3) and reinforced concrete foundation (2) are fixed together, and the footstock of frame supporter (3) and framework suspension column (4) are fixed together.
3. the structure of differential settlement of buildings self-adapting groundwork according to claim 2, it is characterized in that: described frame supporter (3) is the bearing (6) of cross groove by inwall and constitutes with the criss-cross plunger jig (5) that is that bearing (6) groove is interlocked, wherein be and be respectively equipped with many row's Elastip pins (8) on bearing (6) inwall of cross groove, be to be respectively equipped with on the corresponding boss of criss-cross plunger jig (5) and be suitable for the multistage pin chute (7) that Elastip pin (8) glides; The bottom of bearing (6) is provided with the chassis (11) that connects the basis, bottom, and the top of jig (5) is provided with take over a business (12) of connecting frame suspension column (4) bottom.
4. the structure of differential settlement of buildings self-adapting groundwork according to claim 3 is characterized in that: described bearing (6) middle part of cross groove that is is for circular.
5. the structure of differential settlement of buildings self-adapting groundwork according to claim 3 is characterized in that: described criss-cross plunger jig (5) middle part that is is for to be welded cylindrical by steel plate and arc plate.
CN200710133619XA 2007-10-07 2007-10-07 Method for differential settlement of buildings self-adapting groundwork and its structure Expired - Fee Related CN101173520B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200710133619XA CN101173520B (en) 2007-10-07 2007-10-07 Method for differential settlement of buildings self-adapting groundwork and its structure

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Application Number Priority Date Filing Date Title
CN200710133619XA CN101173520B (en) 2007-10-07 2007-10-07 Method for differential settlement of buildings self-adapting groundwork and its structure

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CN101173520A true CN101173520A (en) 2008-05-07
CN101173520B CN101173520B (en) 2010-09-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101707024B (en) * 2009-10-14 2011-04-20 山东科技大学 Foundation bearing capacity damage model test device
CN102660970A (en) * 2012-06-04 2012-09-12 中建三局建设工程股份有限公司 Elastic jacking and point-by-point differential declining device arranged between building and pile top and construction method
CN108661187A (en) * 2018-05-22 2018-10-16 河海大学 A kind of bearing and its working method of adaptive uneven settlement of foundation
CN109545069A (en) * 2018-11-30 2019-03-29 辽宁工程技术大学 A kind of experimental provision and application method for simulating building on goaf differential settlement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101707024B (en) * 2009-10-14 2011-04-20 山东科技大学 Foundation bearing capacity damage model test device
CN102660970A (en) * 2012-06-04 2012-09-12 中建三局建设工程股份有限公司 Elastic jacking and point-by-point differential declining device arranged between building and pile top and construction method
CN102660970B (en) * 2012-06-04 2013-09-11 中建三局建设工程股份有限公司 Elastic jacking and point-by-point differential declining device arranged between building and pile top and construction method
CN108661187A (en) * 2018-05-22 2018-10-16 河海大学 A kind of bearing and its working method of adaptive uneven settlement of foundation
CN108661187B (en) * 2018-05-22 2020-01-24 河海大学 Support for self-adaptive differential settlement of foundation and working method thereof
CN109545069A (en) * 2018-11-30 2019-03-29 辽宁工程技术大学 A kind of experimental provision and application method for simulating building on goaf differential settlement
CN109545069B (en) * 2018-11-30 2020-09-11 辽宁工程技术大学 Experimental device for simulating non-uniform settlement of goaf building and using method

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