CN2390933Y

CN2390933Y - Square steel pipe concrete beam and column jointing gusset

Info

Publication number: CN2390933Y
Application number: CN 99226872
Authority: CN
Inventors: 吕西林; 李学平
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 1999-06-04
Filing date: 1999-06-04
Publication date: 2000-08-09
Anticipated expiration: 2009-06-04

Abstract

The utility model relates to a penetrating reinforcement type square steel pipe concrete beam and column connected node, particularly a link construction of a reinforced concrete column and a square steel pipe concrete beam. Small holes for being penetrated by frame girder longitudinal bars are arranged on the wall of the square steel pipe, the outer wall of the pipe wall is provided with horizontal steel bars or formed steel, a reinforced concrete ring beam is arranged on the periphery of the square steel pipe, and a reinforced steel bar is arranged in the square steel pipe. Because the workload of welding, particular the quantity of welding in situ can be reduced largely, the utility model has the advantages of low cost, simple structure design, superior mechanical properties and little construction difficulty. The utility model can be used for a connected point of a beam and a column of various buildings.

Description

Through ribbed square steel pipe concrete beam, column jointing gusset

The utility model relates to the manufacturing technology of concrete-filled steel square tubular column and steel concrete girder connection.

Concrete-filled steel square tubular column is compared with traditional concrete column, because of its profile has regular rectangle, and the intensity of square steel pipe itself, not only in construction, bring convenience, but for example external mold of square steel pipe double as post and interim support, saving material and artificial; The construction of post inner concrete cooperates a high position to leave the nothing technology of vibrating can once construct which floor, thus accelerating construction progress; Can cooperate the reverse construction of basement in the highrise building better and obtain more large economy benefit; Simultaneously can select for use and construct and separate fully concrete inside and outside the post, accomplish " well water does not intrude into river water ", adopt high-grade concrete in the post, the outer beam slab of post adopts the inferior grade concrete, has further reduced expense.In addition, it also have the cross section of restriction, bearing capacity height, post of the reinforcement ratio of not being subjected to little, from advantages such as heavy and light and floor space are few.Particularly because square steel pipe has big bending resistance shearing resistance cross section, when horizontal earthquake action, born two to shearing action, make inner concrete be subjected to the influence of shearing less, cut ability thereby improved concrete resistance to compression.In a word, concrete-filled steel square tubular column than traditional concrete column all good aspect stress performance such as ductility, the strength and stiffness.Therefore abroad, particularly obtained using widely in the country of these many earthquakes of Japan.Along with the raising of China's output of steel, concrete-filled steel square tubular column also will obtain various places, and particularly apply widely the earthquake district occurred frequently.

But up to now, the type of attachment between concrete-filled steel square tubular column and the beam is not also reasonably solved.Existing concrete-filled steel square tubular column all is to solve with welding or bolted form with being connected of beam.No matter be to adopt, strengthen board-like outside making in the welding of square steel pipe outside; Still welding steel in square steel pipe is strengthened board-like in making; Or about all welding steels make to run through and strengthen board-likely, all are to rely on outer wall of steel pipe to be connected to come Transfer of Shear and moment of flexure with welding of girder steel floor or bolt.Above-mentioned three kinds of forms all exist a large amount of weld seams inevitably, have influenced the steel wood property, easily produce brittle fracture; The field Welding workload is big, the quality requirement height, execution conditions are poor, welding personnel is required raising high and that brought the cost cost thus, and be only applicable to the steel work flooring that section steel beam or profiled sheet are formed, and the still reinforced concrete floor system that has a large capacity and a wide range in China's foreseeable future.

The purpose of this utility model provides a kind of with low cost, and mechanical property is good, and design is succinctly convenient, concrete-filled steel square tubular column that difficulty of construction is low and steel concrete beam connecting node.

In order to achieve the above object, the utility model is realized by following proposal.The square steel pipe tube wall of the junction of concrete-filled steel square tubular column and Vierendeel girder is provided with aperture, is installed with the vertical muscle of Vierendeel girder in the aperture, and vertical muscle passes through square steel pipe to transmit moment of flexure; The steel pipe periphery is provided with collar tie beam, in order to the transfer beams end shear; The tube wall outer wall of the square steel pipe of junction is provided with the horizontal reinforcement or the shaped steel of shearing resistance, makes the most of shearing of Vierendeel girder beam-ends by collar tie beam and shear reinforcement ring or shaped steel, passes to steel pipe walls in the mode of pure shear; Be provided with vertical reinforcement reinforcing bar in the tube wall of square steel pipe, so that the tube wall aperture of square steel pipe is played strengthening action.

The utility model has the advantages that:

1. owing to reduced the welding job amount significantly, the quantity of field Welding particularly, the intensity and the ductility of tie point have been improved, reduced junction under the macroseism because the brittle fracture that welding causes, make good mechanical performance of the present utility model, both be higher than existing square steel pipe post and beam structure, also be higher than existing reinforced concrete structure.

2. except square steel pipe, what the power stream of each parts of tie point transmitted utilization all is that current material is reinforcing bar and concrete, thereby saved the consumption of shaped steel and steel plate, and make the utility model cost be lower than existing steel tubular beam rod structure, only suitable with existing steel concrete cost.

3. because the transmission of beam-ends shearing is to be undertaken by collar tie beam and shear reinforcement or the shaped steel of being located at outer wall of steel pipe, make the utility model power transmission measure safe and reliable, force path is clearly succinct, makes simplicity of design, easy construction.

Accompanying drawing is an embodiment of the present utility model

Fig. 1 is a plane structure schematic diagram of the present utility model

Fig. 2. be collar tie beam plane structure schematic diagram of the present utility model

Fig. 3. be I-I schematic diagram of the present utility model

Fig. 4. be II-II schematic diagram of the present utility model

Fig. 5. be III-III schematic diagram of the present utility model

Fig. 6. be shear reinforcement A point enlarged diagram of the present utility model

Fig. 7. be steel pipe walls aperture B enlarged diagram of the present utility model

In conjunction with the accompanying drawings the utility model is further described

The utility model is made up of square steel pipe (1), aperture (2), collar tie beam (3), vertical muscle (4), concrete (5), reinforcement reinforcing bar (6), pipeline section weld seam bushing pipe (7), shear reinforcement weld seam (8), shear reinforcement ring (9).By one section square steel pipe of every floor face (1) design, elder generation's preboring on the tube wall of the square steel pipe (1) at height of node place is used to wear the aperture (2) of the vertical muscle (4) of Vierendeel girder, then on the outside tube wall of the square steel pipe (1) at node place with shear reinforcement weld seam (8) the one shear reinforcement ring (9) of burn-oning, then aperture (2) side is respectively established a reinforcement reinforcing bar (6) and is welded on the weld seam bushing pipe (7) in the tube wall of square steel pipe (1), with square steel pipe (1) hoisted in position that processes, connect with the preceding paragraph square steel pipe (1), fixing between pipeline section with welding, subsequent again form work engineering of just carrying out Vierendeel girder and collar tie beam is made, at the connected node position that the reinforcing bar cage hoisting of collar tie beam (3) is in place on template at last, the vertical muscle (4) of Vierendeel girder is penetrated in the aperture (2), carry out the construction of the reinforcing bar template of floor, and the construction works of outside the tube wall of square steel pipe (1), carrying out concrete (5) with the floor place.

Claims

1. through ribbed square steel pipe concrete beam, column jointing gusset, it is characterized in that: the tube wall outer wall of the square steel pipe of beam column junction (1) is provided with horizontal reinforcement or shaped steel (9), the periphery of square steel pipe (1) is provided with reinforced concrete circle beam (3), also be provided with the aperture (2) of the vertical muscle (4) of Vierendeel girder that is used to wear collar tie beam (3) on square steel pipe (1) wall, be provided with reinforcement reinforcing bar (6) in the tube wall of square steel pipe (1).