Several Countermeasure And Improvable Advice Of Building Structure Aseismatic Design

With the publishment and implement of new structural aseismatic design code(GB 50011-2001), the improvement of new code compared with the former standard(GBJ11-89)and actual effect of new code for every structural design of aseismatic are paid more attention to. It is found there are some questions worthy of researching during the implement of the new code(GB 50011-2001). In the practice of the structural aseismatic design, arguments about the design were brought by the deference of the designer's understanding and mastering level of the code, the selected structure type, collocation and calculational method. So aseismatic design deserve to be studied thoroughly. Based on practice experiences and summarizing of the collected datas, this paper studied and discussed about these questions maken a more thoroughly. Rely on the theoretics study and calculational analyses ,the main study results read as follows :1. It put forward some more reasonable advices of improvement on the several problems existed in GB 50011-2001 code.Although technology and character expression in code GB50011-2001 have improved a lot, there are still some unsatisfied portion which will bring trouble in proper understanding and implement of the new code, such as in some part there are spelling and printing errors, lacking of standard language or uncomely term, confliction of code and commentary, code and commentary need to be discussed .To maintain the seriousness of code, it suggests to pay more attention to normal write quality and consistency of code and commentary ,and exactness of standard .So this paper can be a reference for code edit and revision department.2. It put forward corresponding improvable advices to the problems and shortages existed in aseismatic design method.(1) Considering errors of aseismatic design, it indicates that "concept design" is more important than "calculate design".(2) Aseismatic fortify target has not study economic aim of structure and not incarnate deference in region . Aseismatic fortify lever is lower ,the definitions of "lower earthquake", "medium earthquake", "high earthquake" are vague. So it suggests give proper consideration on above index and improve aseismatic fortify level properly.(3) It should be clarified connection between structure sort and structure earthquake resistance categories if earthquake resistance categories of reinforcement concrete construction is confirmed exactly by the table 6.1.2 of GB50011-2001 code. Considering predigestion and practicality, the perplexing provision of reinforcement concrete construction aseismatic categories is suggested to eliminate. But the calculation ofearthquake effect parameters and constructional measurements are determined directly bystructure type.(4) The value of construct equivalent total gravity load Geq is not always reasonablewhen horizontal earthquake effect is calculated using foot shearing force method. So it suggests the concept of equivalent quantity modulus ï¿¡, should still be included, and the value of