工程建设标准强制性条文CPECSB5房屋建筑部分（英文版）.doc

PAGE — PAGE 66 — Section V Structure Design 1. Basic Provisions 1.1 Safety Grades for Structures Unified Standard for Architectural Structure Design GBJ 68 – 84 1.0.5 Different safety grades shall be applied in the design of architectural structures according to the seriousness of possible consequences (endangering the lives of people, causing economic losses, producing social impact, etc.) that might be resulted from damage to structure. The classification of safety grades for architectural structures shall comply with the requirements in Table 1.0.5. Safety grades for architectural structures Table 1.0.5 Safety grade Consequence of damage Type of buildings I II III Very serious Serious Not serious Important industrial and civilian buildings Ordinary industrial and civilian buildings Secondary buildings Notes: ① The safety grade for special buildings shall be determined separately according to actual conditions; ② When the design is performed according to anti-seismic requirements, the safety grade of architectural structures shall comply with the provisions in “Specification for anti-seismic design for buildings” 1.2 Structure Load and Combinations Specification on Loading for Architectural Structures GBJ 9 – 87 2.2.1 In the architectural structure design, load effect combinations shall be taken on the basis of the loads that might occur simultaneously on the structure during the application according to bearing capacity limit status and normal application limit status, and the most unfavorable combination in each case shall be taken. 2.2.2 For the bearing capacity limit status, design shall be made with the basic combination and accidental combination of load effects, and the following design expressions shall be adopted: ?0S≤R (2.2.2) Where? 0 — Importance coefficient of structure, and can be taken respectively as 1.1, 1.0 and 0.9 for structural members with safety grades I, II and III; the safety grade of structural members shall be de