A simulation-based procedure was adopted to generate fragility curves for five Chinese code-conforming reinforced concrete (RC) frame structures with increasing design-based earthquake (DBE) intensities. Two important...
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In order to reduce the semi prefabricated RC frame component weight,improving the ductility and durability of RC components,the U shape ultra high performance cementitious composites shell with combines toughening by ...
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In order to reduce the semi prefabricated RC frame component weight,improving the ductility and durability of RC components,the U shape ultra high performance cementitious composites shell with combines toughening by steel wire mesh and steel fibre is used in the permanent formwork design and a new type of reinforced concrete composite beam is *** order to investigate the influence of U shape UHPCC permanent formwork on bending behaviour of reinforced concrete beams,this paper carried out large scale bending test of the reinforced concrete with U type UHPCC permanent formwork and the bending test of contrast reinforced concrete beam is carried out *** to the test results,the effects of the U shape UHPCC permanent formwork on the flexural behaviours and failure mode of the reinforced concrete beams are studied.
Reactive powder concrete (RPC) is a kind of new cementitious composite material with super high performance and high toughness, which has extensive application prospect in protective engineering. The dynamic response ...
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Small-diameter round timber is a forestry by-product mainly from thinning of the artificial forest. It is not suitable for direct use as structural members due to the low quality. To make use of the by-product, a buil...
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Small-diameter round timber is a forestry by-product mainly from thinning of the artificial forest. It is not suitable for direct use as structural members due to the low quality. To make use of the by-product, a built-up stud fabricated with small-diameter round timber was proposed in this paper and was intended to be employed in a shear wall for light wood frame construction. The load-carrying capacity of the built-up stud was investigated experimentally by testing of the specimens under axial compression and testing of the specimens under eccentric compression, respectively. To predict the load-carrying capacity considering buckling, the equation for the modified slenderness ratio of the stud was derived. The predicted load-carrying capacity using the modified slenderness ratio correlated with the test very well. Some suggestions were then given to enhance the load-carrying capacity of the built-up stud. The study provides reference for incorporating the small-diameter round timber into a shear wall of light wood frame construction and thus promotes the application of small-diameter round timber as structural members.
A suit of real ground motion records are selected as inputs. The empirical thresholds provided by the Chinese seismic design code are adopted as the definitions of the concerned limit states. Then the seismic fragilit...
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A suit of real ground motion records are selected as inputs. The empirical thresholds provided by the Chinese seismic design code are adopted as the definitions of the concerned limit states. Then the seismic fragility analysis is conducted for the three-story, five-story and ten-story RC frames with and without infilled masonry walls. The limit state failure probabilities and the damage state failure probabilities conditioned on the frequent earthquake, the design-based earthquake and the major earthquake are calculated. As compared to the results from the RC bare frames we can find that the infilled masonry walls can effectively reduce the failure probability of the RC frame structures under various earthquakes and can consequently promote the safety levels against earthquake.
As an effective base isolation device, friction pendulum bearings (FPB) were finely modeled and applied in the K8 single-layer reticulated domes in this paper. First, influence of friction pendulum bearings was analyz...
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As an effective base isolation device, friction pendulum bearings (FPB) were finely modeled and applied in the K8 single-layer reticulated domes in this paper. First, influence of friction pendulum bearings was analyzed on the seismic performance of single-layer spherical reticulated shell from two aspects, the peak acceleration and earthquake energy. Moreover, the seismic performance of structure with FPB was studied under different ground motion intensities from three aspects, the dynamic stress, the nodal acceleration, and the vertical relative displacement of nodes. The result showed that the peak vertical acceleration was reduced and a part of earthquake energy was isolated by using FPBs. Under the different ground motion intensities, the seismic effect of a K8 single-layer spherical reticulated shell structure with FPB was similar.
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