Disaster Prevention Research Center

Beijing, China

Disaster Prevention Research Center

Beijing, China
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Gong J.-F.,China Academy of Building Research | Gong J.-F.,State Key Laboratory of Building Safety and Environment | Gong J.-F.,Disaster Prevention Research Center | Hou G.-Y.,Beijing Institute of Architectural Design | And 4 more authors.
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | Year: 2014

Under similar geological conditions, the settlement of integrated tall building with large area raft is more greatly reduced than that of single tall building with similar size and loading. Compared to that of the single tall building at later period after completion, the settlement of the integrated tall building is smaller, generally less than 20% of the total amount. The settlement of the integrated tall building usually becomes stable about one year after its completion. When the integral flexure of plate-raft foundation is no more than 0.02% and the crack resistance of raft foundation is no less than 2, only the local bending moment should be taken into consideration in the design of plate-raft foundation, and the integral bending moment is ensured through structural measures. When the integral flexure of plate-raft foundation is more than 0.02% or the crack resistance of raft foundation is less than 2, the effects of the local and integral bending moments should be considered.


Yu W.,China Academy of Building Research | Zhou Y.H.,China Academy of Building Research | Zhu L.X.,Disaster Prevention Research Center | Ge X.L.,Disaster Prevention Research Center
Advanced Materials Research | Year: 2014

Electric power system is an important part of lifeline systems, and it is vulnerable to earthquake. In this paper, the characteristics of failure of electric power system are summarized on the basis of its damages in past earthquakes. Then earthquake damage and failure mechanism of electric structure and equipment are analyzed. Finally, from the aspects of engineering and non-engineering, disaster prevention countermeasures are presented. © (2014) Trans Tech Publications, Switzerland.


Yan Y.,China Academy of Building Research | Tang Y.,Disaster Prevention Research Center | Jin X.,China Academy of Building Research
Jianzhu Jiegou Xuebao/Journal of Building Structures | Year: 2014

Seven building models with different shapes were designed to test in wind tunnel according to two corner modification forms provided in Chinese load code. The paper defined corner modification ratio as the ratio of projection of single modified corner along the principle axis to projection of the whole section in the same direction. And the influence of corner modification ratio on wind loads was analyzed. The results show that the chamfered corner and corner recession both reduce wind loads on the buildings. While the modification ratio of corner recession is 10%, the mean value and root mean square value of along wind force coefficient are most decreased compared with other models; while the modification ratio of corner recession is 20%, the root mean square values for the across wind load is the lowest of all test models. In the frequency domain, corner modification has no apparent influence on along wind load but obvious shifts of the peak reduced frequency with increase of corner modification ratio can be found.


Bi X.,Research Institute Co. | Bi X.,Disaster Prevention Research Center | Zhang J.,Disaster Prevention Research Center | Zhang J.,China Academy of Building Research | Wang J.,Disaster Prevention Research Center
Journal of Natural Disasters | Year: 2014

Buildings are main objects of urban disaster prevention. The ability of comprehensive disaster-prevention of buildings concerns the whole social security. Based on Civil Building Reliability Evaluation Criteria and Dangerous Building Identification Criteria, this paper proposed a Comprehensive disaster-prevention evaluation index system including structure, facilities and personnel. Comparing with single disaster assessment, it is systematic and comprehensive, and at the same time, it can quantify the evaluation index directly. The evaluation research would help owners and government managers to fully know the usage situation of the buildings, as well as provides a reference to building maintenance, reconstruction and reinforcement.


Wang G.-Y.,China Academy of Building Research | Wang G.-Y.,Disaster Prevention Research Center | Wang G.-Y.,State Key Laboratory of Building Safety and Environment | Zhang D.-M.,China Academy of Building Research | And 2 more authors.
Gongcheng Lixue/Engineering Mechanics | Year: 2014

A finite element (FE) model for studying the fire performance of concrete filled steel tube (CFST) column-steel beam plane frames is proposed, and its results agree well with actual test results. Parameters such as fire location and the limits of its expansion, beam load, beam depth, strengthened beam ribs, and axial load level of columns were used to study the deformation and resulting internal force redistribution, the failure modes, the failure mechanism, and the fire resistance of CFST frames using the FE model. The results show that fire location and its expansion influence the fire resistance of CFST frames, and beam loading also has a great influence, while column axial load level has little influence.


Bi X.Y.,Disaster Prevention Research Center | Bi X.Y.,Beijing University of Civil Engineering and Architecture | Zhang J.Y.,Disaster Prevention Research Center | Zhang J.Y.,Beijing University of Civil Engineering and Architecture | And 3 more authors.
Applied Mechanics and Materials | Year: 2013

Building is the focus of the city's comprehensive disaster prevention and mitigation. The comprehensive disaster prevention ability of the construction directly affects the safety of the people, the city and even the society as a whole. According to Civil Construction Reliability Evaluation Criteria and the Standard of Dangerous Building Appraisal, the evaluation index system is establisshed in this paper, which is including structure, facilities and personnel, to evaluate the comprehensive disaster prevention ability of the construction. Also the fuzzy evaluation method is put forward to solve the complexity of the evaluation objects and the difficult quantitative of the evaluation index directly. The research results help owners and the government managers to fully understand the usage of the building, and formulate the specific prevention measures. It also provides a reference basis for the maintenance and reinforcement of building. © (2013) Trans Tech Publications, Switzerland.


Wang G.-Y.,China Academy of Building Research | Wang G.-Y.,Disaster Prevention Research Center | Wang G.-Y.,State key Laboratory of Building Safety and Environment | Shi Y.,China Academy of Building Research | And 8 more authors.
Gongcheng Lixue/Engineering Mechanics | Year: 2015

An experiment on the temperature field and post-fire seismic performance of steel reinforced concrete (SRC) columns was carried out, in which eight large-scale specimens were used in order to reduce the size effect. First, the temperature distribution and evolution of the specimens during a fire is studied. Then, a systematic experimental study on the hysteresis curve properties, stiffness, and load carrying capacity of the SRC columns is carried out, considering such parameters as heating time, axial compression ratio, and steel ratio. It can be concluded that the temperature increase in the interior of the specimens is slower than that of the fire temperature, and the temperature increase in the inner core of the specimens is slower than that of the exterior. A plastic hinge zone appears when the SRC column specimen is loaded to collapse after fire, and the length of the plastic hinge zone increases with an increase in heating time. In general, the hysteresis curve is spindle shaped except for a small pinch effect, which means the energy dissipation ability of the SRC column specimens is still good after a fire. The load carrying capacity of the specimens decreases with an increase in the heating time, and the load carrying capacity increases with an increase in the axial compression ratio. The ductility decreases with an increase in the axial compression, and the studs have little influence on the load carrying capacity. © 2015, Engineering Mechanics Press. All right reserved.


Ge X.,China Academy of Building Research | Zhu L.,Disaster Prevention Research Center | Yu W.,China Academy of Building Research
Journal of Natural Disasters | Year: 2014

Based on disaster investigations of buildings in villages and towns damaged in earthquakes, floods and typhoons, the main problems in materials, structure, construction and disaster resistance capacity of these buildings are obtained. Aiming at these problems, anti-disaster measures are adopted in disaster prevention codes for rural buildings to improve their seismic capacity, anti-flood capacity and anti-wind ability. Related research institutions did a lot of work in disaster prevention construction of buildings in villages and towns, due to the limited space, this paper gives only a brief introduction of researches completed by relevant subject of China Academy of Building Research.


Wang G.-Y.,China Academy of Building Research | Wang G.-Y.,Disaster Prevention Research Center | Wang G.-Y.,State Key Laboratory of Buiding Safety and Built Environment | Li Y.-M.,China Youth University for Political Sciences
Gongcheng Lixue/Engineering Mechanics | Year: 2013

A finite element (FE) model was proposed to simulate the performance of composite frames with concrete filled steel tube (CFST) columns and steel beams subjected to local fire. In the model, the heated members were simulated with shell elements and continuum elements while the other members were simulated with beam elements. The results of this FE model agreed well with those of test results. The FE model was then used to study the failure mode, the failure mechanism, the deformation and the internal force redistribution of the CFST frames. The results show that the CFST frames have two typical failure modes. The first failure mode is the local failure induced by the global buckling of the heated steel beam, and the second failure mode is the global failure induced by the heated column failure.

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