CN202644774U - Replaceable steel coupling beam - Google Patents

Replaceable steel coupling beam Download PDF

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Publication number
CN202644774U
CN202644774U CN 201220177556 CN201220177556U CN202644774U CN 202644774 U CN202644774 U CN 202644774U CN 201220177556 CN201220177556 CN 201220177556 CN 201220177556 U CN201220177556 U CN 201220177556U CN 202644774 U CN202644774 U CN 202644774U
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China
Prior art keywords
replaceable
beam section
energy dissipation
energy dissipating
section
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Expired - Lifetime
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CN 201220177556
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Chinese (zh)
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纪晓东
马琦峰
钱稼茹
潘鹏
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Tsinghua University
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Tsinghua University
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Abstract

A replaceable steel coupling beam comprises a replaceable energy dissipation beam section and non-energy dissipation beam sections arranged on two ends of the replaceable energy dissipation beam section, wherein the replaceable energy dissipation beam section and the non-energy dissipation beam sections are connected through end plates and high-strength bolts. The height of the cross section of the replaceable energy dissipation beam section is smaller than the height of the cross section of non-energy dissipation beam sections, the replaceable energy dissipation beam section is separated from floor slabs, and the yield capacity of the non-energy dissipation beam sections is larger than that of the replaceable energy dissipation beam section. Under strong shock, the replaceable energy dissipation beam section can shear yield and dissipate earthquake energy, and the non-energy dissipation beam sections arranged on two ends of the replaceable energy dissipation beam section can keep elasticity. The replaceable energy dissipation beam section is separated from the floor slabs, thereby not only relieving cracking of the floor slabs under earthquakes, but also facilitating fast replacement of the energy dissipation beam section. By means of the replaceable steel coupling beam, after strong quakes, the replaceable steel coupling beam is strong in energy dissipation capability, can be quickly repaired after quakes, and is simple and convenient in construction. The replaceable steel coupling beam can improve fast recovery capability of high-rise building structures after strong quakes, thereby having wide market popularization and application prospect.

Description

A kind of replaceable steel coupling beam
Technical field
The utility model relates to construction work and structural seismic technical field, particularly a kind of replaceable steel coupling beam.
Background technology
Have the key character that numerous high levels and super highrise building are modern cities.Population in use high-rise, super highrise building is numerous, expected service life is long, in case the generation seismic Damage will cause a large number of users to be moved out and take refuge, can cause social stability and the people's production and life to have a strong impact on.Because the highrise building scale of construction is large, structural system is complicated, financial cost and the time cost of repairing and reinforcement can be apparently higher than median low structures after the shake.For some important highrise building as city commercial or financial center, the loss from suspension that seismic Damage causes may surpass the cost of building structure itself.Therefore, modern high-rise building is satisfying under the prerequisite of seismic safety, and promoting the rear function fast restoration capabilities of its shake is the developing direction of structural seismic technology.
Highrise building adopts framework-Core Walls Structure or frame shear wall structure system in a large number, and wherein shear wall is topmost lateral resisting unit, has often born to surpass 80% base shear and 50% above earthquake overturning moment.Use at present maximum steel concrete connection limb shear walls that are still, practice shows, steel concrete connection limb wall rigidity is large, bearing capacity is high, has certain ductility and energy dissipation capacity after the appropriate design, can accomplish no collapsing with strong earthquake, but its seismic Damage reparation is very difficult.Wherein the general span-depth radio of reinforced concrete coupling beams is little, and shear failure easily occurs under the earthquake reciprocating, must to whole coupling beam reparation, take time and effort after the shake.
In recent years, the country such as the U.S., Canada and New Zealand adopts the steel coupling beam to replace reinforced concrete coupling beams, is comprised of steel coupling beam and reinforced concrete wall limb and mixes connection limb shear wall.Studies show that, can realize shear yielding after the steel coupling beam appropriate design, hysteresis loop is highly stable full, and ductility and energy dissipation capacity significantly are better than traditional reinforced concrete coupling beams, mix connection limb shear wall anti-seismic performance good, be particularly suitable for the highrise building of high intensity Zone.But because large and its two ends of the weight of whole steel coupling beam are embedded in the reinforced concrete wall limb in the highrise building, be difficult to directly replacing after the shake, repair very difficult after the shake of steel coupling beam.
The utility model content
The problem that exists in order to solve above-mentioned prior art, the purpose of this utility model is to provide a kind of replaceable steel coupling beam, effect with energy-dissipating and shock-absorbing when meeting with violent earthquake, and have convertibility after the shake, can promote the ability of the fast quick-recovery of function after the building structure macroseism by using this coupling beam.
In order to achieve the above object, the technical scheme that adopts of the utility model is:
A kind of replaceable steel coupling beam, the non-energy dissipating beam section 1 that comprises replaceable energy dissipating beam section 2 and place replaceable energy dissipating beam section 2 two ends, described replaceable energy dissipating beam section 2 be connected 1 of energy dissipating beam section and be connected connection with high-strength bolt by end plate.
Described replaceable energy dissipating beam section 2 depth of sections are lower than non-energy dissipating beam section 1, and replaceable energy dissipating beam section 2 is thrown off with floor.
The surrender bearing capacity of described non-energy dissipating beam section 1 is greater than replaceable energy dissipating beam section 2.
Be provided with a plurality of reinforcement floors 4 with floor 3 vertical direction in the described replaceable energy dissipating beam section 2.
Described non-energy dissipating beam section 1 and replaceable energy dissipating beam section 2 all adopt steel I-beam.
Described replaceable energy dissipating beam section 2 adopts common iron or Low Yield Point Steel.
Replaceable steel coupling beam is used for high level or super highrise building after the described macroseism.
The utility model is compared with existing technology, and has following advantage:
1) easy construction.The utility model is take steel as main material; The intersegmental employing high-strength bolt of the non-energy dissipating beam assembly connection at replaceable energy dissipating beam section and two ends can Assembling.Work progress need not form work engineering.Construction fast, and is convenient, site operation with low cost.
2) make things convenient for building pipeline to arrange.Steel Design of Connecting Beam height generally can be lower than the concrete coupling beam, and replaceable energy dissipating beam section depth of section is lower than again non-energy dissipating beam section, and throws off with floor, so that the line layout of building is more flexible.
3) energy dissipation capacity is strong, and anti-seismic performance is superior.Shear yielding occurs in the replaceable energy dissipating beam section after the utility model macroseism in the replaceable steel coupling beam under larger Cyclic Loading, and by its shearing lag return dissipation seismic energy.Studies show that, under the reciprocating load, the girder steel of web shear yielding has large, stable hysteretic energy ability.By rationally adding the reinforcement floor, will further improve its hysteretic energy ability.Therefore can reduce structural seismic response, improve the anti-seismic performance of structure.
4) can realize shaking the fast quick-recovery of rear function.Replaceable steel coupling beam is under the violent earthquake effect after the macroseism of the present utility model, replaceable energy dissipating beam section shear yielding, remainder is unyielding, can realize the functional rehabilitation of coupling beam after the shake by changing energy dissipating beam section, reduce financial cost and the time cost repaired, the ability of the fast quick-recovery of function after the lifting building structure macroseism.
The utility model under severe earthquake action, replaceable energy dissipating beam section web place shear yielding because the shear strain of replaceable energy dissipating beam section is large, can be by its hysteretic energy seismic energy that dissipates in a large number.Simultaneously, the concrete floor of replaceable energy dissipating beam Duan Yuqi top is thrown off, and can effectively alleviate the floor cracking, make floor be easy to shake rear reparation.After the macroseism, by changing energy dissipating beam section, can realize the quick reparation of coupling beam, thereby promote the ability of the rear fast quick-recovery of function of high building structure shake.
Description of drawings
Fig. 1 is the elevation of the replaceable steel coupling beam of the utility model.
Fig. 2 is the top view (removing floor) of the replaceable steel coupling beam of the utility model.
Fig. 3 is for using limb shear wall of the present utility model and the distortion schematic diagram under geological process thereof, and wherein Fig. 3 a uses limb shear wall of the present utility model before the earthquake; Fig. 3 b uses the distortion schematic diagram of limb shear wall of the present utility model when being macroseism.
Fig. 4 is that the seismic Damage of the replaceable steel coupling beam of the utility model distributes and the rear schematic diagram of repairing of shake.
The specific embodiment
Below in conjunction with the drawings and specific embodiments structural principle of the present utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of replaceable steel coupling beam of the utility model, be applied in high level or the super highrise building, the non-energy dissipating beam section 1 that comprises replaceable energy dissipating beam section 2 and place replaceable energy dissipating beam section 2 two ends, replaceable energy dissipating beam section 2 be connected 1 of energy dissipating beam section and be connected connection with high-strength bolt by end plate, replaceable energy dissipating beam section 2 shear yieldings and by shearing lag return dissipation seismic energy under the severe earthquake action, and two ends non-energy dissipating beam section keeps elasticity; Can realize by changing energy dissipating beam section the quick reparation of coupling beam after the macroseism.This coupling beam places under the concrete floor 3, is welded to connect with the connected mode employing of wall limb and the newel post of steel plate shear force wall limb, or is embedded in the constrained edge member of reinforced concrete wall limb.Replaceable energy dissipating beam section 2 depth of sections are lower than non-energy dissipating beam section 1, and replaceable energy dissipating beam section 2 and floor disengagement, are convenient to shake the replacing of rear replaceable energy dissipating beam section 2.
As shown in Figure 3, under the severe earthquake action, after the macroseism of the present utility model the distortion of the non-energy dissipating beam section 1 at replaceable steel coupling beam two ends less, and shear yieldings occur in the replaceable energy dissipating beam section 2 at coupling beam middle part, its shear strain is relatively large.Simultaneously, according to the Practical Project demand, can effectively avoid the too early flexing of web, significantly improve its shearing lag return energy dissipation capacity at replaceable energy dissipating beam section 2 web place appropriate design reinforcement floors 4, and avoid the non-energy dissipating beam of replaceable energy dissipating beam section and two ends section junction to damage.
As shown in Figure 4, after macroseism finishes, only need replacing that the replaceable energy dissipating beam section 2 of damage occurs, can realize the quick reparation of coupling beam, and then realize the fast quick-recovery of the rear structure function of shake.In addition, although 2 distortion of replaceable energy dissipating beam section are larger, throw off with top concrete floor 3, can effectively alleviate top concrete floor 3 crackings.
Described non-energy dissipating beam section 1 and replaceable energy dissipating beam section 2 all adopt steel I-beam.
Described replaceable energy dissipating beam section 2 adopts common iron or Low Yield Point Steel.

Claims (7)

1. replaceable steel coupling beam, it is characterized in that: the non-energy dissipating beam section (1) that comprises replaceable energy dissipating beam section (2) and place replaceable energy dissipating beam section (2) two ends, described replaceable energy dissipating beam section (2) be connected be connected 5 by end plate with high-strength bolt between energy dissipating beam section (1)) connect.
2. replaceable steel coupling beam according to claim 1, it is characterized in that: described replaceable energy dissipating beam section (2) depth of section is lower than non-energy dissipating beam section (1), and replaceable energy dissipating beam section (2) is thrown off with floor.
3. replaceable steel coupling beam according to claim 1 and 2, it is characterized in that: the surrender bearing capacity of described non-energy dissipating beam section (1) is greater than replaceable energy dissipating beam section (2).
4. replaceable steel coupling beam according to claim 1 and 2 is characterized in that: in the described replaceable energy dissipating beam section (2) and floor (3) vertical direction be provided with a plurality of reinforcement floors (4).
5. replaceable steel coupling beam according to claim 1 and 2, it is characterized in that: described non-energy dissipating beam section (1) and replaceable energy dissipating beam section (2) all adopt steel I-beam.
6. replaceable steel coupling beam according to claim 1 and 2 is characterized in that: described replaceable energy dissipating beam section (2) employing common iron or Low Yield Point Steel.
7. each described replaceable steel coupling beam of claim 1 to 6 is used for high level or super highrise building.
CN 201220177556 2012-04-24 2012-04-24 Replaceable steel coupling beam Expired - Lifetime CN202644774U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644358A (en) * 2012-04-24 2012-08-22 清华大学 Steel coupling beam capable of being replaced after strong earthquake
CN103061451A (en) * 2013-01-09 2013-04-24 北京工业大学 Horizontally-sliced composite coupling beam with cave opening concrete wall body and construction method thereof
CN103628589A (en) * 2013-12-23 2014-03-12 海南大学 Bending shear yielding type replaceable coupling beam
CN104032860A (en) * 2014-05-15 2014-09-10 中国建筑股份有限公司 Assembly-type mixed coupled wall system and construction method thereof
CN104047367A (en) * 2014-06-26 2014-09-17 清华大学 Novel connecting structure capable of achieving replacement of steel coupling beams
CN105971145A (en) * 2016-07-01 2016-09-28 上海赛弗工程减震技术有限公司 Mounting structure of anti-seismic coupling-beam damper of building
CN107354863A (en) * 2017-07-21 2017-11-17 华侨大学 A kind of assembled gate-type round steel pipe bridge pier that power consumption binder is set
CN109057069A (en) * 2018-09-12 2018-12-21 西安建筑科技大学 A kind of connection structure and installation method of replaceable small span-depth ratio steel deep beam
CN113982299A (en) * 2021-02-09 2022-01-28 广州大学 Reinforcing device for completely cutting out seismic damage connecting beam and construction method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644358A (en) * 2012-04-24 2012-08-22 清华大学 Steel coupling beam capable of being replaced after strong earthquake
CN103061451A (en) * 2013-01-09 2013-04-24 北京工业大学 Horizontally-sliced composite coupling beam with cave opening concrete wall body and construction method thereof
CN103628589A (en) * 2013-12-23 2014-03-12 海南大学 Bending shear yielding type replaceable coupling beam
CN104032860A (en) * 2014-05-15 2014-09-10 中国建筑股份有限公司 Assembly-type mixed coupled wall system and construction method thereof
CN104047367A (en) * 2014-06-26 2014-09-17 清华大学 Novel connecting structure capable of achieving replacement of steel coupling beams
CN105971145A (en) * 2016-07-01 2016-09-28 上海赛弗工程减震技术有限公司 Mounting structure of anti-seismic coupling-beam damper of building
CN107354863A (en) * 2017-07-21 2017-11-17 华侨大学 A kind of assembled gate-type round steel pipe bridge pier that power consumption binder is set
CN109057069A (en) * 2018-09-12 2018-12-21 西安建筑科技大学 A kind of connection structure and installation method of replaceable small span-depth ratio steel deep beam
CN113982299A (en) * 2021-02-09 2022-01-28 广州大学 Reinforcing device for completely cutting out seismic damage connecting beam and construction method

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