The Application of the Steel Materials in Large-Span Cantilever Composite Structure

2013 ◽  
Vol 644 ◽  
pp. 353-357
Author(s):  
Nan Geng
Keyword(s):  
Composite Structure ◽  
High Strength ◽  
Structure Design ◽  
Frame Structure ◽  
Joint Control ◽  
Steel Beam ◽  
Curtain Wall ◽  
Cable Structure ◽  
Large Span ◽  
Cantilever Length

The characteristic of the Steel materials are high strength、light weight、high integral rigidity、high deformation capacity, So the Steel materials is suitable used to build large-span、superelevation、extra-heavy type of building. The urban planning exhibition hall of cultural activity center in Shanxi is large-span cantilever composite structure,that is SRC column and steel beam + concrete frame structure, the maximum cantilever length of fourth layer truss is 10 m.Through the top of the cantilever steel beam with its lower suspension truss and cross-section cantilever steel beam of the first floor cantilever beam realize cantilever togetherly. Realize the structure design based on Performance Analysis by using midas/gen ver8.00 to establish a rational model,. The pipe truss and tensed cable structure joint control the total displacement of glass curtain wall.

Seismic performance of prefabricated high-strength concrete tube column–steel beam joints

2017 ◽  
Vol 21 (5) ◽  
pp. 658-674 ◽  
Author(s):  
Xizhi Zhang ◽  
Jiawei Zhang ◽  
Xuejian Gong ◽  
Shaohua Zhang
Keyword(s):  
Seismic Performance ◽  
High Strength Concrete ◽  
Failure Modes ◽  
High Strength ◽  
Frame Structure ◽  
Steel Beam ◽  
Seismic Region ◽  
Strength Concrete ◽  
Shear Connectors ◽  
Cracking Pattern

This study proposes a new type of fabricated hybrid frame structure, which is a prefabricated high-strength concrete tube column–steel beam joint hybrid frame structure. A series of six full-scale cruciform prefabricated high-strength concrete tube column–H-shaped beam joint specimens was tested under cyclic loading to investigate the seismic performance of the new fabricated hybrid frame structure. We designed the connection in the manner that the capacity of beam was higher than that of the column. The cracking pattern, failure modes, energy dissipation capacity, and strain profiles of the specimens were obtained and discussed. The test results showed that some specimens collapsed due to ring plate tearing failure and weld fracture, while other specimens collapsed due to column flexural failure. Shear connectors (i.e. shear studs and shear reinforcement) could ensure the reliable transmission of shear force, and the compound stirrups can effectively improve bearing capacity and joint ductility. The stiffness degradation of specimens was smooth with a linearly decreasing trend because of the prestressed reinforcement. The new joints could be applied in a seismic region.

Experimental Study on Specimens of Steel Secondary Beam Embedded in Reinforced Concrete Girder of Frame Structure

2011 ◽  
Vol 243-249 ◽  
pp. 1072-1084 ◽  
Author(s):  
Qiong Yu ◽  
Zhou Dao Lu ◽  
Jiang Tao Yu ◽  
Xing Zhuang Zhao ◽  
Jin Dai
Keyword(s):  
Reinforced Concrete ◽  
Cantilever Beam ◽  
Concrete Beam ◽  
Concrete Slab ◽  
Frame Structure ◽  
Secondary Beam ◽  
Steel Beam ◽  
Rotational Angle ◽  
Pullout Failure ◽  
Concrete Girder

Test of two specimens (four different joints) of steel secondary beam embedded in reinforced concrete girder in frame structure and one specimen with steel cantilever beam embedded in reinforced concrete girder under static load were conducted. The steel beam up-flange was pulled out because of the concrete cracks caused by the moment, shear and torsion at the upper zone of the concrete beam near the steel beam end. Shear failure of the concrete beam and the top flange pullout failure are the most hazardous failure modes. Lacking restraint of concrete and the reinforcement of steel bar in the concrete slab and catenary action of restraint steel beam, the capacity of steel cantilever beam is much smaller than other beams. Load-slip curve of top flange of steel beam, load-rotation curve of the steel beam end are obtained through experiment. Primary calculation method of joints flexural capacity related to section size of composite steel beam, embedded depth of steel beam, flange width of steel beam embedded end, height of frame girder, is put up with. Analytical results of ABAQUS are shown as follows. Top flange pullout failure of steel beam is caused by the detachment of concrete and steel beam end, and the warp of the concrete slab near the support plays an unfavorable action on the performance of the steel beam. The end rotational angle of the steel beam with anchor bar is smaller than that without. The steel beam with shear connectors develops a smaller rotational angle and a higher load capacity.

Dynamic Response of Frame Structure with Different Stiffness in Two Horizontal Directions under Oblique Seismic Action

2013 ◽  
Vol 368-370 ◽  
pp. 1644-1647
Author(s):  
Zhen Bao Li ◽  
Hai Teng Wang ◽  
Li Fei Liu ◽  
Wen Jing Wang
Keyword(s):  
Dynamic Response ◽  
Ground Motion ◽  
Structure Design ◽  
Frame Structure ◽  
Maximum Response ◽  
Seismic Action

The ground motion is multidimensional, random and uncertain in directions when earthquakes occur, so dynamic response under oblique seismic action needs to be considered in the structure design. A frame structure with different stiffness in two horizontal directions was analyzed under seismic action with different input angles. The maximum response of beams and columns was obtained. The seismic mechanism of structures under oblique seismic action was discussed.

Based on the Grey Relation Analysis of Ecological Composite Wall Seismic Performance Research

2013 ◽  
Vol 368-370 ◽  
pp. 1043-1047
Author(s):  
Yin Zhang ◽  
You Han ◽  
Shuai Liang
Keyword(s):  
Seismic Performance ◽  
Evaluation System ◽  
Design Method ◽  
Structure Design ◽  
Grey System Theory ◽  
Frame Structure ◽  
Wall Structure ◽  
Width Ratio ◽  
Grey System ◽  
Composite Wall

Ecological composite wall as ecological composite wall structure of the main stress components, the seismic performance is ecological composite wall structure seismic performance evaluation system of the main content. Based on the grey system theory, the grey correlation analysis to the key parameters (the mouth of the cave, frame structure, height to width ratio) change ecological composite wall test results are analyzed, the key parameters on the ecological composite wall the influence law of seismic performance, for choosing wall structure design method to provide basis.

scholarly journals Gradient-based selection of cross sections: a novel approach for optimal frame structure design

2017 ◽  
Vol 56 (5) ◽  
pp. 959-972 ◽  
Author(s):  
Christian Krogh ◽  
Mathias H. Jungersen ◽  
Erik Lund ◽  
Esben Lindgaard
Keyword(s):  
Cross Sections ◽  
Structure Design ◽  
Frame Structure ◽  
Novel Approach ◽  
Gradient Based ◽  
Selection Of
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