贡金鑫,王雪婷,张勤.从汶川地震灾害看现行国内外桥梁抗震设计方法[J].,2009,(5):739-747 |
从汶川地震灾害看现行国内外桥梁抗震设计方法 |
Overview on current bridge seismic design approach in home and abroad codes based on survey of Wenchuan earthquake |
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DOI:10.7511/dllgxb200905019 |
中文关键词: 桥梁工程 抗震 规范 |
英文关键词: bridge engineering seismic code |
基金项目:教育部创新团队资助项目IRT0518;国家自然科学基金资助项目(重点项目90815027). |
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中文摘要: |
地震区的工程结构要进行抗震设计,所以地震发生后结构的破坏情况与抗震标准有密切关系.结合汶川地震桥梁的破坏情况,对我国、日本、美国、欧洲、新西兰等国抗震规范要求进行了分析.结果表明,汶川地震桥梁破坏的主要原因是实际烈度远大于设防烈度,但也与设计不符合规范要求及当时的桥梁抗震规范标准不高和一些因素考虑不周有关.新颁布的桥梁抗震设计细则设计方法与国外的桥梁抗震设计方法已经比较接近,但仍需要进一步改进. |
英文摘要: |
The structures in earthquake regions should be designed with the seismic requirement, so the damage condition of structures is associated with the standard it relies on. A comparative study was made on specification relating to bridge seismic design in codes of China, Japan, USA, Europe and New Zealand, combined with the observed damage of bridges in Wenchuan earthquake. It is shown that although the damage of bridge in the earthquake is mainly attributed to overintensity, other reasons related to the damage are poor design, substandard and lack of detailed consideration. The design approach in new published criteria for seismic design of bridge is comparatively close in some aspect to abroad codes, but further improvement is needed. |
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