CN204298978U

CN204298978U - Two rank power consumption steel coupling beam

Info

Publication number: CN204298978U
Application number: CN201420754201.6U
Authority: CN
Inventors: 郭小康
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-12-04
Filing date: 2014-12-04
Publication date: 2015-04-29
Anticipated expiration: 2024-12-04

Abstract

The utility model provides a kind of two rank power consumption steel coupling beam, at least comprise endosternum, two pieces of coxostermums, upper and lower frange plate and polyliths put more energy into floor, described two blocks of coxostermums and endosternum are parallel to each other and are vertically connected between top flange plate and bottom wing listrium, described endosternum is arranged between two coxostermums, be provided with multiple horizontal bar-shaped trough in the middle part of described endosternum, described outer web outside longitudinal separation arranges polylith and to put more energy into floor.The utility model structure rationally, make use of shear plate yield displacement less, the feature that bent stick yield displacement is larger, can realize the function of surrender power consumption of two stage, and the distortion of two energy consume mechanisms and bearing capacity separate, not only easily design, and structure is relatively simple again, do not need to increase extra constraint mechanism, better economy, ductility and energy consumption is excellent, has good popularizing application prospect.

Description

Two rank power consumption steel coupling beam

Technical field

The present invention relates to building structure aseismatic prevention technique field, belong to structural damping Passive Control category, be specifically related to a kind of steel coupling beam with two rank power consumption function.

Background technology

Shear wall structure and frame-core tube Mixed Architecture are the form of structure generally adopted in high-rise and super highrise building at present.The beam of connection wall limb and wall limb, wall limb and frame column is called coupling beam.It is little that coupling beam generally has span, and cross section is large, the feature that the wall stiffness be connected with coupling beam is very large.Because building doors and windows punches or structure design demand; usually Coupled Shear Wall can be adopted; coupling beam and wall limb ratio of rigidity should be moderate, and it changes the couple that is made up of the bending resistance of each wall limb and wall limb axle power into resist horizontal force by the cross section bending resistance that only relies on of entity shear wall.Coupled Shear Wall reasonable in design mainly relies on bottom coupling beam end and wall limb and occurs that plastic hinge is to the seismic energy that dissipates, and coupling beam is introduced into surrender, coupling beam is as the main dissipative member in shear wall structure, because its internal force under geological process is larger, and comparatively large on the impact of wall limb, make it in the anti-seismic performance research of shear wall, have critical role.

Usual employing be still reinforced concrete coupling beams, when the rise-span ratio of conventional steel bar concrete coupling beam is less (being generally not more than 2.5), the shear failure in concrete rupture district can be there is in coupling beam after vertical muscle surrender, ductility and energy dissipation capacity poor, along with the increase of cutting pressure ratio, the ductility of coupling beam can reduce further, and increases the shear failure that stirrup can postpone coupling beam to a certain extent, but limited use.

In order to improve ductility and the energy dissipation capacity of the reinforced concrete coupling beams of small span-depth ratio, U.S. ACI318-08 specification and China's " seismic design provision in building code " regulation: when the span-depth radio of coupling beam is less than 2, intersection concealed bracings arrangement of reinforcement coupling beam should be used, although concealed bracings arrangement of reinforcement coupling beam of intersecting has had larger lifting than conventional steel bar concrete coupling beam in ductility and energy dissipation capacity, but load in the plain bars skeleton of coupling beam executing after man-hour requirement runs through two oblique cage of reinforcement mutually, construction bothers very much.In order to enable coupling beam effectively dissipate seismic energy, propose to adopt steel coupling beam to substitute the thought that reinforced concrete coupling beams carrys out connecting reinforcement concrete shear force wall.

Steel beam column is adopted usually to have two kinds as the way of Coupled Shear Wall energy-consuming parts: reinforced concrete coupling beams is replaced with steel coupling beam by (1); (2) reinforced concrete coupling beams is replaced with shearing type damper.Way (1) steel coupling beam as structural element, and can only remain on elastic stage under little shake, can not provide additional damping ratio for structure, the effect of its competence exertion energy-dissipating and shock-absorbing under middle shake or large shake; Way (2) is actually the additional energy-dissipating device of shearing type damper as structure under little shake, for structure provides additional damping, thus reduction geological process, but can not structural element be it can be used as, being coupled than the anti-side efficiency with structure of Coupled Shear Wall can be affected.

Utility model content

Technical problem to be solved in the utility model is exactly for existing coupling beam above shortcomings, one is provided to utilize shear plate yield displacement less, the feature that perforate bent stick yield displacement is larger, realize the steel coupling beam of the function of surrender power consumption of two stage, and the distortion of two energy consume mechanisms and bearing capacity separate, not only easily design, and structure is relatively simple again, do not need to increase extra constraint mechanism, better economy, ductility and energy consumption is excellent.

For achieving the above object and other relevant objects, the utility model provides a kind of two rank power consumption steel coupling beam, at least comprise endosternum, two pieces of coxostermums, upper and lower frange plate and polyliths put more energy into floor, described two blocks of coxostermums and endosternum are parallel to each other and are vertically connected between top flange plate and bottom wing listrium, described endosternum is arranged between two coxostermums, be provided with multiple horizontal bar-shaped trough in the middle part of described endosternum, described outer web outside longitudinal separation arranges polylith and to put more energy into floor.

Further, described coxostermum is the low yield point steel plate of initial yield intensity lower than 235Mpa.

Further, the initial yield intensity of described endosternum is greater than pleurosternal initial yield intensity.

Further, the length of described horizontal bar-shaped trough is 1/3 of endosternum length.

By above technical scheme, the utility model has following technique effect compared to prior art: the utility model greatly can improve the ability of building structure opposing horizontal earthquake action, improve the anti-seismic performance of structure, after avoiding the shake of ordinary concrete coupling beam, repair the shortcoming of difficulty; The shortcoming of additional damping can not be provided under improving the little shake of ordinary steel coupling beam; Its structure rationally, make use of shear plate yield displacement less, the feature that bent stick yield displacement is larger, can realize the function of surrender power consumption of two stage, and the distortion of two energy consume mechanisms and bearing capacity separate, not only easily design, and structure is relatively simple again, do not need to increase extra constraint mechanism, better economy, ductility and energy consumption is excellent, has good popularizing application prospect.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention's two rank power consumption steel coupling beam;

Fig. 2 is the lateral view of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is the structural representation of endosternum.

Element numbers illustrates:

1 frange plate

2 coxostermums

3 endosternums

4 put more energy into floor

Detailed description of the invention

By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this manual can understand other advantages of the present utility model and effect easily.

Refer to Fig. 1 to Fig. 4.Notice, structure, ratio, size etc. that this manual institute accompanying drawings illustrates, content all only in order to coordinate manual to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this manual as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.

Based on the application present situation of current steel coupling beam, as shown in Figure 1, Figure 2 and Figure 3, the utility model proposes a kind of two rank power consumption steel coupling beam, at least comprise the frange plate 3 of endosternum 1, two blocks of coxostermums 2, up and down both sides and polylith to put more energy into floor 4, two blocks of coxostermums 2 and endosternum 1 are parallel to each other and are vertically connected between top flange plate and bottom wing listrium, endosternum 1 is arranged between two coxostermums 2, be provided with multiple horizontal bar-shaped trough in the middle part of endosternum 1, the length of horizontal bar-shaped trough is 1/3 (shown in Fig. 4) of endosternum length.Outer web outside longitudinal separation arranges polylith and to put more energy into floor 4.The utility model meets following performance: be structural element under (1) little shake, provide be coupled effect of contraction to wall limb; (2) be again energy-consuming parts under little shake, can additional damping ratio be provided, thus reduce geological process, reduce structural response, improve the macroeconomic of structure; (3) there are clear and definite two yield points, between first and second yield point, the structure member of steel coupling beam is unyielding, play structure function, and energy-consuming parts surrender, play additional damping effect, more than the second yield point (namely, shake is with when shaking greatly), structural element and dissipative member all enter surrender power consumption state.

Be described in further detail below in conjunction with specific implementation process of the present utility model:

(1) according to building and analysis and designation requirement, determine the apparent size of this structure, comprise length, highly, the parameter such as width, be connected with agent structure to facilitate.

(2) according to surrender bearing capacity and yield displacement requirement, coxostermum 2 is selected to be the low yield point steel plate of initial yield intensity lower than 235Mpa, the initial yield intensity of endosternum 1 is greater than the initial yield intensity of coxostermum 2, and determines the thickness of coxostermum 2 and the thickness of endosternum 1 and perforate mode.The preferred Q100 coxostermum of the present embodiment, Q235 or Q345 endosternum.

Claims

1. a two rank power consumption steel coupling beam, it is characterized in that, at least comprise endosternum, two pieces of coxostermums, upper and lower frange plate and polyliths put more energy into floor, described two blocks of coxostermums and endosternum are parallel to each other and are vertically connected between top flange plate and bottom wing listrium, described endosternum is arranged between two coxostermums, be provided with multiple horizontal bar-shaped trough in the middle part of described endosternum, described outer web outside longitudinal separation arranges polylith and to put more energy into floor.

2. according to claim 1 pair of rank power consumption steel coupling beam, it is characterized in that, described coxostermum is the low yield point steel plate of initial yield intensity lower than 235Mpa.

3. according to claim 1 pair of rank power consumption steel coupling beam, it is characterized in that, the initial yield intensity of described endosternum is greater than pleurosternal initial yield intensity.

4. according to claim 1 pair of rank power consumption steel coupling beam, it is characterized in that, the length of described horizontal bar-shaped trough is 1/3 of endosternum length.