Shuangliang Energy Systems Inc

Yinchuan, China

Shuangliang Energy Systems Inc

Yinchuan, China
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Du N.-J.,Xi'an University of Architecture and Technology | Bai G.-L.,Xi'an University of Architecture and Technology | Liu L.,Shuangliang Energy Systems Inc | Zhao X.-G.,Xi'an University of Architecture and Technology
Gongcheng Lixue/Engineering Mechanics | Year: 2017

The traditional steel-concrete hybrid air-cooling structure can hardly satisfy the requirements of the 1000 MW thermal power plants in high seismic regions. The displacement of the cantilever end of the structure is beyond the limit value, local force is too large, and the overall lateral displacement is also big under a seismic action. Thus, a steel-concrete hybrid air-cooling structure with steel braces was proposed. Pseudo-dynamic and pseudo-static tests were conducted for a 1/8 scaled model structure. Its hysteretic behavior, ductility, stiffness degradation and energy dissipation capacity were studied when the model structure was under EL-Centro (N-S) horizontal earthquake motion. The test results show that the structure with steel braces will have better energy dissipation capability, slower stiffness degradation speed, bigger residual stiffness and more safety stock, compared with the traditional steel-concrete hybrid structure. The research results can provide an experimental basis for the aseismic design of similar structures, and a guide for relevant engineering design. © 2017, Engineering Mechanics Press. All right reserved.


Dai H.,Xi'an University of Architecture and Technology | Dai H.,Xi'an University of Science and Technology | Bai G.,Xi'an University of Architecture and Technology | Wang B.,Xi'an University of Architecture and Technology | Liu L.,Shuangliang Energy Systems Inc
World Information on Earthquake Engineering | Year: 2013

This paper studies the dynamic characteristics of air-cooled condenser structure through model test and finite element analysis. Firstly, Selecting a 1/4 substructure, a 1/8 scale model was constructed, The natural vibration frequencies and mode shapes of experimental model were obtained with hammering method; Then, the finite element model of the experiment structure was built with ABAQUS soft ware, the results show that the calculated values agree with the experimental results, the method of finite element model is reasonable; And then, the finite element model of the prototype structure was built to calculate the dynamic character, analyze the causes of the torsional effect of the structure, and design proposal considering the torsional effect was given; Finally, the basic period and damping variation of the structure was analyzed through pseudo dynamic test of the model. The results of this paper can be used for application of new type air-cooled condenser structure with umbrella brace.


Wang B.,Xi'an University of Architecture and Technology | Bai G.-L.,Xi'an University of Architecture and Technology | Liu L.,Shuangliang Energy Systems Inc | Dai H.-J.,Xi'an University of Science and Technology
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2014

SRC (shapes reinforced concrete) frame-bent hybrid structure is a new type of main building system for thermal power plants, and a reasonable arrangement of shear walls can make the structure have three anti-seismic lines. ABAQUS finite element software was used to analyze the elastic-plastic seismic response of the structure under 8 degree minor earthquake, moderate earthquake and major earthquake as well as 9 degree major earthquake, to acquire the base shear, lateral displacement, inter-story drift and damage evolutionary character of the structure under different earthquake intensities. The results showed that the shear wall is damaged firstly under strong earthquake, it forms the first anti-seismic line, and this can enhance the earthquake resistance of the structure effectively; as the earthquake intensity increases, the weak part of the structure moves down from coal hopper floor to operation floor and to bottom two stories, and the lateral displacement curve is shifting from shear-moment-type toward shear-type; the deformation performance of the whole structure is well, it can make the structure meet the requirement of no collapse under severe earthquake. Finally, the reasonable arrangement and seismic tectonic measure of shear walls under different earthquake intensities and different site categories were suggested through numerical analysis, they could be referencial to engineering designs.


Dai H.-J.,Xi'an University of Science and Technology | Bai G.-L.,Xi'an University of Architecture and Technology | Wang B.,Xi'an University of Architecture and Technology | Liu L.,Shuangliang Energy Systems Inc
Gongcheng Lixue/Engineering Mechanics | Year: 2014

The traditional air-cooled condenser structure systems made up of steel trusses and reinforced concrete columns hardly satisfy the requirements for highly seismic regions in a 1000MW unit thermal power plant, a new air-cooled condenser structure system consisting of steel slant supports, steel trusses and reinforced concrete columns is proposed and its aseismic behavior is studied by experimental tests. Selecting a 1/4 substructure, a 1/8 scale model is constructed, the dynamic properties of the model are measured, and pseudo-dynamic and pseudo-static tests are carried out to study the hysteretic behaviour, deformation performance and failure mode of the structure. The results indicate that the structure can satisfy the requirements of highly seismic regions in a 1000MW unit thermal power plant, and the displacement-load curve is plump with good energy dissipation capacity and deformation performance.


Wang B.,Xi'an University of Architecture and Technology | Bai G.-L.,Xi'an University of Architecture and Technology | Kang L.-G.,Xi'an University of Architecture and Technology | Liu L.,Shuangliang Energy Systems Inc | Dai H.-J.,Xi'an University of Science and Technology
Zhendong yu Chongji/Journal of Vibration and Shock | Year: 2015

Pseudo-dynamic and pseudo-static tests of a SRC frame-bent model structure, and pseudo-static test of typical SRC abnormal joints were conducted to analyze the influence of constraint shear wall on the structure's failure mode and energy dissipation performance. The results showed that the shear wall is the first aseismic line of the structure to make the failure model be helpful to resist earthquakes; the weak part of the structure moves down from coal hopper floor and operation floor to two bottom stories with increase in earthquake intensity; the load-displacement hysteretic curve is plump, and the energy dissipation performance is better; the shear wall has a significant restraint effect on the crack developing of SRC abnormal joints, and setting constraint shear walls along both vertical and horizontal direction can improve the failure mode of this kind of joints; setting constraint shear wall can enhance the energy dissipation performance, force-bearing capacity and ductility performance of SRC abnormal joints obviously. The research results provided basic research data for promoting the application of SRC frame-bent structures. ©, 2015, Chinese Vibration Engineering Society. All right reserved.

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