Many staircases in reinforced concrete （RC） frame structures suffered severe damage during the Wenchuan earthquake. Elastic analyses for 18 RC structure models with and without staircases are conducted and compared ...Many staircases in reinforced concrete （RC） frame structures suffered severe damage during the Wenchuan earthquake. Elastic analyses for 18 RC structure models with and without staircases are conducted and compared to study the influence of the staircase on the stiffness, displacements and internal forces of the structures. To capture the yielding development and damage mechanism of frame structures, elasto-plastic analysis is carried out for one of the 18 models. Based on the features observed in the analyses, a new type of staircase design i.e., isolating them from the master structure to eliminate the effect of K-type struts, is proposed and discussed. It is concluded that the proposed method of staircase isolation is effective and feasible for engineering design, and does not significantly increase the construction cost.展开更多
Taking representative hotels in Guangzhou City for examples,this study investigated ecological waterscape designs in those hotels from the perspective of eco-design of animals and plants,water and bank.It was proposed...Taking representative hotels in Guangzhou City for examples,this study investigated ecological waterscape designs in those hotels from the perspective of eco-design of animals and plants,water and bank.It was proposed that the eco-design of animals and plants requires the scientific application and combination of indigenous plants to protect bio-diversity and create a balanced ecosystem;eco-design of water should focus on the construction of an excellent water circulation system;eco-design of bank should help enhance the relationship between waterscapes and viewers,and satisfy human's nature of loving water.Besides,problems in those hotel waterscape designs were also analyzed and corresponding suggestions put forward,for example,in view of ecological problems in the design of water circulation system and the improvement of water quality,it was proposed that a water eco-balance system should be created and water kept clean;in view of security problems caused by polluted water,protective measures should be taken to guarantee safety of customers;as for those waterscapes with poor landscape effects,various means could be applied to improve its quality and show its best artistic effects;the overall planning of waterscape operation and maintenance should be enhanced to save water resources and operation cost.展开更多
基金The National Key Technologies R&D Program under Grant No. 2009BAJ28B01The Technologies R&D Program of China State Construction Engineering Co., Ltd under Grant No. CSCEC-2009-Z-15
文摘Many staircases in reinforced concrete （RC） frame structures suffered severe damage during the Wenchuan earthquake. Elastic analyses for 18 RC structure models with and without staircases are conducted and compared to study the influence of the staircase on the stiffness, displacements and internal forces of the structures. To capture the yielding development and damage mechanism of frame structures, elasto-plastic analysis is carried out for one of the 18 models. Based on the features observed in the analyses, a new type of staircase design i.e., isolating them from the master structure to eliminate the effect of K-type struts, is proposed and discussed. It is concluded that the proposed method of staircase isolation is effective and feasible for engineering design, and does not significantly increase the construction cost.
文摘Taking representative hotels in Guangzhou City for examples,this study investigated ecological waterscape designs in those hotels from the perspective of eco-design of animals and plants,water and bank.It was proposed that the eco-design of animals and plants requires the scientific application and combination of indigenous plants to protect bio-diversity and create a balanced ecosystem;eco-design of water should focus on the construction of an excellent water circulation system;eco-design of bank should help enhance the relationship between waterscapes and viewers,and satisfy human's nature of loving water.Besides,problems in those hotel waterscape designs were also analyzed and corresponding suggestions put forward,for example,in view of ecological problems in the design of water circulation system and the improvement of water quality,it was proposed that a water eco-balance system should be created and water kept clean;in view of security problems caused by polluted water,protective measures should be taken to guarantee safety of customers;as for those waterscapes with poor landscape effects,various means could be applied to improve its quality and show its best artistic effects;the overall planning of waterscape operation and maintenance should be enhanced to save water resources and operation cost.
