CN103790230A - Novel post-earthquake self-reset concrete framework structural system - Google Patents
Novel post-earthquake self-reset concrete framework structural system Download PDFInfo
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- CN103790230A CN103790230A CN201410061677.6A CN201410061677A CN103790230A CN 103790230 A CN103790230 A CN 103790230A CN 201410061677 A CN201410061677 A CN 201410061677A CN 103790230 A CN103790230 A CN 103790230A
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- 239000004567 concrete Substances 0.000 title claims abstract description 58
- 238000010276 construction Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract 14
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- 230000002787 reinforcement Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 7
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- 238000004873 anchoring Methods 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims 2
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- 238000003912 environmental pollution Methods 0.000 abstract 1
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- 230000003014 reinforcing effect Effects 0.000 description 25
- 238000013461 design Methods 0.000 description 5
- 238000009432 framing Methods 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
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- 239000011150 reinforced concrete Substances 0.000 description 1
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Abstract
本发明涉及一种新型震后自复位混凝土框架结构体系，属于防震减灾技术领域；嵌合式杯形基础的初始刚度与现浇混凝土结构的刚度基本相当，在层间位移角较小的情况下，预应力钢筋仍保持弹性，耗能钢筋则进入塑性状态以耗散能量，地震作用后嵌合式杯形基础可以回复到其初始位置，与现有技术相比，本发明提出的一种新型震后自复位混凝土框架结构体系是对传统的混凝土结构建筑基础的颠覆，基本解决了混凝土结构的不易装配、延性差的难题；与传统的混凝土结构基础相比，它具有安全性能高，环境污染小，安全事故少和工程造价低等诸多优点。
The invention relates to a new post-earthquake self-resetting concrete frame structure system, which belongs to the technical field of earthquake prevention and disaster reduction; the initial stiffness of the embedded cup-shaped foundation is basically equivalent to that of the cast-in-place concrete structure, and when the interstory displacement angle is small, The prestressed steel bar still maintains elasticity, and the energy-dissipating steel bar enters a plastic state to dissipate energy. After the earthquake, the chiseled cup-shaped foundation can return to its original position. Compared with the prior art, a new post-earthquake The self-resetting concrete frame structure system is a subversion of the traditional concrete structure building foundation, which basically solves the problems of difficult assembly and poor ductility of the concrete structure; compared with the traditional concrete structure foundation, it has high safety performance and less environmental pollution. It has many advantages such as few safety accidents and low construction cost.
Description
Technical field
The present invention relates to Self-resetting concrete frame structure system after a kind of novel shake, belong to protection against and mitigation of earthquake disasters technical field.
Background technology
In earthquake, collapsing of building structure is to threaten people's life safety and the topmost reason that causes any property loss.Wenchuan and Yaan earthquake show that concrete structure anti-seismic performance is not good, weak foundation, China's concrete structure is main architecture structure form at present, especially prestressed reinforced concrete construction technology is in international most advanced level, the application of prestressing technique can reduce the amount of deflection of beam, increase the span of beam, also can play the effect of the rear Self-resetting of shake.Performance prestressing technique advantage, applies it on concrete frame basis, can improve anti-seismic performance and the self-resetting capability of cup-shaped foundation, and concrete frame basic engineering obtains the fine or not quality that directly has influence on concrete structure.If concrete component does not destroy, lost efficacy in basis, just do not reach the original intention of seismic design of structures, more can not meet the design concept of " strong basis plinth ".
In recent years, concrete anti-earthquake research based on performance design and design are conceived to promote the rear performance of concrete structure shake more and more, to guarantee the safety of China's primary structure form-concrete structure, to by the ingehious design to structure, reduce to greatest extent earthquake loss.Compare with basis with superstructure, the anti-seismic performance of superstructure and basic junction is more important.But in earthquake, junction does not show due ductility and good anti-seismic performance, and has occurred prematurely the phenomenon such as gap, crackle.After earthquake, even if structure does not collapse, also can be because of excessive expendable plasticity permanent set has occurred, and finally still need to be removed, to rebuild.At present, concrete superstructure becomes one of the primary study in concrete structure field content with basic being connected.
Summary of the invention
The object of the invention is to propose Self-resetting concrete frame structure system after a kind of novel shake of one that belongs to protection against and mitigation of earthquake disasters technical field, its object is to improve concrete structure anti-seismic performance, repairs difficulty and maintenance cost after reducing shake.After novel shake, Self-resetting concrete frame structure cup-shaped foundation basic comprising comprises the members such as frame column, cup-shaped foundation, prestressed reinforcement, power consumption reinforcing bar.Concrete structure is in work progress, cup-shaped foundation and frame column are prefabricated units, frame column has run through power consumption reinforcing bar while construction in workshop, reserving hole by power consumption reinforcing bar through cup-shaped foundation, and apply prestressing force, utilize permanent ground tackle to be fixed on the bottom of cup-shaped foundation, then with performance prestressed high reinforcing bar the reserving hole through frame column and cup-shaped foundation, this prestressed reinforcement make frame column with basic be connected tightr.Outstanding cone-shaped end is arranged at frame column bottom, and cup-shaped foundation is provided with cone tank in relevant position, and such mosaic joint can guarantee that frame column is connected closely with cup-shaped foundation, and larger opposing shearing is provided.The power consumption reinforcing bar main dissipative member of type of attachment for this reason, makes it have better Hysteresis Behavior, and ductility factor greatly improves.
For achieving the above object, the technical solution used in the present invention is Self-resetting concrete frame structure system after a kind of novel shake, the initial stiffness of mosaic cup-shaped foundation and the rigidity of cast-in-place concrete structure are substantially suitable, the in the situation that of less at relative storey displacement angle, prestressed reinforcement still keeps elasticity, power consumption reinforcing bar enters plastic state with dissipation energy, and after geological process, mosaic cup-shaped foundation can be returned to its initial position.
Prestressed applying makes concrete frame structure can obtain higher safety factor.The major advantage of this frame structure system: have self-centering ability, thereby greatly reduced the rear permanent set of shake; Initial stiffness is large similar to cast-in-place concrete structure rigidity; Geological process lower prestress reinforcing bar keeps elasticity, and nonelastic deformation concentrates on power consumption reinforcing bar, and carrys out dissipation energy by the nonelastic deformation of power consumption reinforcing bar; After greatly reducing shake, repair difficulty and cost.
Compared with prior art, the present invention has following beneficial effect.
1, after novel shake in Self-resetting concrete frame structure system, the cup-shaped foundation, the frame column that adopt are all prefabricated units, can be in factory process, assemble job site, and such construction method can solve the difficult problem that prefabricated concrete structure basis is difficult for assembling.
2, Self-resetting concrete frame structure system after described novel shake, adopt prefabricated units to carry out Assembling completely, cancel the traditional approach of job site concreting, effectively guarantee construction quality, the environment pollution of having avoided concreting to cause completely, realize site operation " anhydrous, without fire, dustless " three without standard, reduced the generation of the hazardous accidents such as fire.When the present invention removes at member, can recycle efficiently, reduce building waste, real realization the theory of environmental protection, be concrete frame structure a kind of green, sustainable development basis.
3, Self-resetting concrete frame structure system after described novel shake, adopts prestressing force Self-resetting base form, has realized the Self-resetting of shake posterior nodal point, has greatly reduced the rear rehabilitation cost of shake; Improve the anti-seismic performance of basis and superstructure junction, thereby improve the anti-seismic performance of frame structure system.
4, after the novel shake that the present invention proposes, Self-resetting concrete frame structure system is to the overturning of traditional concrete structure building foundation, and has substantially solved the poor difficult problem of difficult assembling, ductility of concrete structure; The plurality of advantages such as compared with traditional concrete structure basis, it is high that it has security performance, and environment pollution is little, and the few and construction costs of security incident is low.
Accompanying drawing explanation
Fig. 1 is Self-resetting suspension column position view of the present invention.
Fig. 2 is the generalized section of Self-resetting of the present invention basis and frame column.
Fig. 3 is the fractionation schematic diagram of Self-resetting of the present invention basis and frame column.
Fig. 4 is cup-shaped foundation floor map of the present invention.
Fig. 5 is cup-shaped foundation side elevation schematic diagram of the present invention.
Fig. 6 is frame column generalized section of the present invention.
Fig. 7 is the three-dimensional assembling drawing of frame structure system of the present invention.
In figure: 1, power consumption reinforcing bar, 2, prestressed reinforcement, 3, permanent ground tackle, 4, cup-shaped foundation, 5, frame column, 6, pea gravel concreten, 7, cone-shaped end, 8, the reserved power consumption of cup-shaped foundation reinforcing bar hole, 9, the reserved prestressed reinforcement hole of cup-shaped foundation, 10, cone tank, 11, the reserved prestressed reinforcement hole of frame column.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Fig. 1-7, Self-resetting concrete frame structure system after a kind of novel shake, this frame structure system comprises lower floor's frame foundation, upper strata concrete structure; Lower floor's frame foundation is made up of frame set; Every framing group comprises cup-shaped foundation 4, frame column 5; Described cup-shaped foundation 4 is platform shape cone structure, the platform shape cone platform of cup-shaped foundation 4 is provided with the groove step with frame column 5 cylindroid assemblings, in the middle of groove step, be provided with cone tank 10, cone tank 10 two ends of groove step plane are provided with the reserved power consumption of cup-shaped foundation reinforcing bar hole 8 side by side, and cone tank 10 intermediate layers of groove step plane are provided with the reserved prestressed reinforcement hole 9 of cup-shaped foundation side by side; The reserved power consumption of described cup-shaped foundation reinforcing bar hole 8 is parallel construction with the reserved prestressed reinforcement hole 9 of cup-shaped foundation.
After novel shake of the present invention in Self-resetting concrete frame structure cup-shaped foundation, frame column 5 has run through power consumption reinforcing bar 1 when prefabricated, in the time that frame column 5 and cup-shaped foundation 4 are assembled, power consumption reinforcing bar 1, through the power consumption reinforcing bar reserving hole 8 of cup-shaped foundation, utilizes permanent ground tackle 3 power consumption reinforcing bar 1 to be anchored in to the bottom of cup-shaped foundation 4.
After described novel shake, in Self-resetting concrete frame structure cup-shaped foundation, cup-shaped foundation 4 positions are at post and ground connecting place; After completing the assembling of every framing and joining, build upper strata concrete structure, thereby form concrete frame structure system.
After described novel shake, in Self-resetting concrete frame structure cup-shaped foundation, described cup-shaped foundation 4 is as follows with the connection procedure of frame column 5.
S1 is at the prefabricated cup-shaped foundation power consumption reinforcing bar hole 8 of factory or job site and reserved prestressed reinforcement hole 9.
S2 completes after the prefabricated work of cup-shaped foundation power consumption reinforcing bar hole 8 and reserved prestressed reinforcement hole 9, assemble at the construction field (site), by vertical frame column 5 cup-shaped foundation 4 that inserts, the cone-shaped end 7 of frame column 5 bottoms inserts in the cone tank 10 of cup-shaped foundation 4 just, the power consumption reinforcing bar 1 of frame column inserts in the reserving hole 8 of cup-shaped foundation 4, now utilize total powerstation test block trestle 5 whether vertical with cup-shaped foundation 4, after guaranteeing vertically, utilize permanent ground tackle 3 that power consumption reinforcing bar 1 is carried out to anchoring in cup-shaped foundation 4 bottoms.
After 1 anchoring of S3 power consumption reinforcing bar, prestressed reinforcement 2 is run through to the reserving hole 9 of frame column reserving hole 11 and cup-shaped foundation 4, two ends apply prestressing force, prestressed size, by calculative determination in early stage, utilizes permanent ground tackle 3 that prestressed reinforcement 2 is anchored at respectively to frame column 5 tops and cup-shaped foundation 4 bottoms.
After S4 assembling, by cup-shaped foundation 4 and frame column 5 integral lifting, be installed on ground, again use the verticality of total powerstation test block trestle, after guaranteeing vertically, build pea gravel concreten at the gap place of cup-shaped foundation and frame column.
After S5 completes the assembling of every framing and joins, build upper strata concrete structure, thereby form concrete frame structure system.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410061677.6A CN103790230B (en) | 2014-02-24 | 2014-02-24 | Novel post-earthquake self-reset concrete framework structural system |
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| CN201410061677.6A CN103790230B (en) | 2014-02-24 | 2014-02-24 | Novel post-earthquake self-reset concrete framework structural system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649101A (en) * | 2016-01-22 | 2016-06-08 | 湖州职业技术学院 | Reinforced concrete vibration-isolated foundation |
| CN108049517A (en) * | 2018-01-11 | 2018-05-18 | 重庆大学 | A kind of external replaceable energy consuming components Self-resetting RC frame foot joints |
| CN109267584A (en) * | 2018-11-09 | 2019-01-25 | 沈阳建筑大学 | Assembly concrete prismoid shaped basis and column steel connection structure and assembly method |
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|---|---|---|---|---|
| JPH09100538A (en) * | 1995-10-06 | 1997-04-15 | Kajima Corp | Basic structure of building |
| CN2330704Y (en) * | 1998-06-12 | 1999-07-28 | 李岭群 | Castin-situ vibration-damping device for foundation socket |
| CN102409606A (en) * | 2011-07-29 | 2012-04-11 | 清华大学 | Self-resetting pier column structural system with built-in energy dissipation assembly and implementing method for self-resetting piper column structural system |
| CN103276793A (en) * | 2013-06-08 | 2013-09-04 | 北京工业大学 | Hollow irregular column multi-layer high-rise assembling steel frame-central support system |
| CN103362210A (en) * | 2013-07-08 | 2013-10-23 | 中国矿业大学 | Prestress assembly frame structure |
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2014
- 2014-02-24 CN CN201410061677.6A patent/CN103790230B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09100538A (en) * | 1995-10-06 | 1997-04-15 | Kajima Corp | Basic structure of building |
| CN2330704Y (en) * | 1998-06-12 | 1999-07-28 | 李岭群 | Castin-situ vibration-damping device for foundation socket |
| CN102409606A (en) * | 2011-07-29 | 2012-04-11 | 清华大学 | Self-resetting pier column structural system with built-in energy dissipation assembly and implementing method for self-resetting piper column structural system |
| CN103276793A (en) * | 2013-06-08 | 2013-09-04 | 北京工业大学 | Hollow irregular column multi-layer high-rise assembling steel frame-central support system |
| CN103362210A (en) * | 2013-07-08 | 2013-10-23 | 中国矿业大学 | Prestress assembly frame structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649101A (en) * | 2016-01-22 | 2016-06-08 | 湖州职业技术学院 | Reinforced concrete vibration-isolated foundation |
| CN108049517A (en) * | 2018-01-11 | 2018-05-18 | 重庆大学 | A kind of external replaceable energy consuming components Self-resetting RC frame foot joints |
| CN108049517B (en) * | 2018-01-11 | 2024-02-06 | 重庆大学 | External replaceable energy consumption assembly self-resetting RC frame column foot node |
| CN109267584A (en) * | 2018-11-09 | 2019-01-25 | 沈阳建筑大学 | Assembly concrete prismoid shaped basis and column steel connection structure and assembly method |
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| CN103790230B (en) | 2017-01-18 |
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Effective date of registration: 20200824 Address after: Room 302, No. 8319, Yanshan Road, Bengbu City, Anhui Province Patentee after: Bengbu Lichao Information Technology Co.,Ltd. Address before: 100124 Chaoyang District, Beijing Ping Park, No. 100 Patentee before: Beijing University of Technology |
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Effective date of registration: 20201130 Address after: 414400 100m northwest of the intersection of Longzhou North Road and Longzhou South Road, Miluo City, Yueyang City, Hunan Province Patentee after: Science and technology innovation service center of Hunan Miluo circular economy industrial park Address before: Room 302, No. 8319, Yanshan Road, Bengbu City, Anhui Province Patentee before: Bengbu Lichao Information Technology Co.,Ltd. |