既有预应力空间索杆系结构的安全性评价方法
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摘要
为解决考虑拉索腐蚀程度的既有预应力空间索杆系结构安全评价技术难题,研究建立了基于结构自身特性和拉索腐蚀程度的安全性客观评价方法。首先,建立了空间索杆系在瞬间断索下的动力响应分析方法,并通过三索结构算例验证了该方法的合理性和可行性;其次,根据判断矩阵构建理论和断索分析结果,建立了考虑拉索腐蚀程度的索杆系中各拉索权重系数确定方法;在此基础上,建立了拉索腐蚀程度的隶属函数,构建拉索索系的安全评语集,根据权重系数和拉索腐蚀程度检测结果,建立了既有预应力空间索系安全性的模糊综合评价体系。依托于某基于空间索杆系结构,对所构建的权重确定方法、隶属度函数和模糊综合评价模型进行了初步的应用和合理性验证。
In order to solve the safety evaluation problem of existing prestressed cable truss structures considering the corrosion degree of cables,an objective evaluation system is established based on the characteristics of the structure and the corrosion degree of the cables. Firstly,the dynamic response analysis method of cable-strut system under the instantaneous break is established,and the rationality and feasibility of proposed method are verified by three cable structures. According to the construction theory of judgment matrix and the result of the cable breaking analysis,the method for determining the weight coefficient of each cable in the cable-strut system is established considering the corrosion degree of the cable. On this basis,the membership function of the corrosion degree of the cable is established,and the safety evaluation set of the cable system is built. At last,based on the weight coefficient and the corrosion degree of the cable,the fuzzy comprehensive evaluation system is established for the safety of existing prestressed spatial cable system. Furthermore,the weight coefficient determination method,the membership function and the fuzzy comprehensive evaluation model are applied and verified by a practical spatial cable-strut structure.
In order to solve the safety evaluation problem of existing prestressed cable truss structures considering the corrosion degree of cables,an objective evaluation system is established based on the characteristics of the structure and the corrosion degree of the cables. Firstly,the dynamic response analysis method of cable-strut system under the instantaneous break is established,and the rationality and feasibility of proposed method are verified by three cable structures. According to the construction theory of judgment matrix and the result of the cable breaking analysis,the method for determining the weight coefficient of each cable in the cable-strut system is established considering the corrosion degree of the cable. On this basis,the membership function of the corrosion degree of the cable is established,and the safety evaluation set of the cable system is built. At last,based on the weight coefficient and the corrosion degree of the cable,the fuzzy comprehensive evaluation system is established for the safety of existing prestressed spatial cable system. Furthermore,the weight coefficient determination method,the membership function and the fuzzy comprehensive evaluation model are applied and verified by a practical spatial cable-strut structure.
引文
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[14]张秋文,章永志,钟鸣.基于云模型的水库诱发地震风险多级模糊综合评价[J].水利学报,2014,45(1):88-95.(ZHANG Qiuwen,ZHANG Yongzhi,ZHONG Ming. A cloud model based approach for multi-hierarchy fuzzy comprehensive evaluation of reservoir-induced seismic risk[J]. Journal of Hydraulic Engineering,2014,45(1):88-95.(in Chinese))
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[16]许红胜,吴佳东,黄娟,等.基于蚀坑参数的既有斜拉索钢丝腐蚀程度分级评价研究[J].中外公路,2015,35(6):148-151.(XU Hongsheng,WU Jiadong,HUANG Juan,et al. Study on evaluation of corrosion degree of existing cable steel wire based on pitting parameters[J]. Journal of China and Foreign Highway,2015,35(6):148-151.(in Chinese))
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[18]郑山锁,张晓辉,黄威曾,等.多龄期钢框架时变损伤模型研究[J].地震工程学报,2018,40(3):389-397.(ZHENG Shansuo,ZHANG Xiaohui,HUANG Weizeng,et al. Study on time-varying damage model of multi-age steel frame structures[J]. China Earthquake Engineering Journal,2018,40(3):389-397.(in Chinese))
[19]王晓飞,王鹏飞,贾虎,等.基于时变地震损伤模型的多龄期钢框架结构易损性分析[J].地震工程学报,2016,38(2):192-201.(WANG Xiaofei,WANG Pengfei,JIA Hu,et al. Seismic vulnerability analysis of multiage steel frame structures based on time-varying seismic damage model[J]. China Earthquake Engineering Journal,2016,38(2):192-201.(in Chinese))
[20]郑山锁石磊郑捷,等.近海大气环境下钢框架自振频率评估研究[J].地震工程学报,2016,38(5):673-677.(ZHENG Shansuo,SHI Lei,ZHENG Jie,et al. Assessment of natural frequency of steel frames in offshore atmospheric environment[J].China Earthquake Engineering Journal,2016,38(5):673-677.(in Chinese))
[21]张家超,杨海霞.结构损伤识别中的生物地理学优化算法[J].河海大学学报(自然科学版),2018,46(3):234-239.(ZHANG Jiachao,YANG Haixia. Biogeography-based optimization algorithm forstructural damage detection[J].Journal of Hohai University(Natural Sciences),2018,46(3):234-239.(in Chinese))
[2]金晓飞,范峰,沈世钊.巨型射电望远镜(FAST)反射面支承结构参数敏感性分析[J].土木工程学报,2010,43(2):12-19.(JIN Xiaofei,FAN Feng,SHEN Shizhao. Parameter sensitivity analysis of the cable-net structure supporting the reflector of a large radio telescope-FAST[J]. China Civil Engineering Journal,2010,43(2):12-19.(in Chinese))
[3]徐晓明,张士昌,李亚明.苏州工业园区体育中心体育场结构设计[J].建筑结构,2014,44(增刊2):161-164.(XU Xiaoming,ZHANG Shichang,LI Yaming. Structural design of Suzhou Industrial Park Sports Center Stadium[J]. Building Structure,2014,44(Sup2):161-164.(in Chinese))
[4]王永泉,郭正兴,罗斌.常州体育馆大跨度椭球形弦支穹顶预应力拉索施工[J].施工技术,2008,37(3):33-36.(WANG Yongquan,GUO Zhengxing,LUO Bin. Prestressed cable construction of large-span ellipti suspended-dome in Changzhou Gymnasium[J].Construction Technology,2008,37(3):33-36.(in Chinese))
[5]郭正兴,王永泉,罗斌.济南奥体中心体育馆大跨度弦支穹顶预应力拉索施工[J].施工技术,2008,37(5):133-135.(GUO Zhengxing,WANG Yongquan,LUO Bin. Prestressed cable construction of large-span suspended-dome in Ji’nan Olympic Center Gymnasium[J]. Construction Technology,2008,37(5):133-135.(in Chinese))
[6]兰成明,李惠,鞠杨.平行钢丝拉索承载力评定[J].土木工程学报,2013,46(5):31-38.(LAN Chengming,LI Hui,JU Yang. Bearing capacity assessment for parallel wire cables[J]. China Civil Engineering Journal,2013,46(5):31-38.(in Chinese))
[7]王永泉,郭正兴,罗斌.空间预应力钢结构拉索等效预张力确定方法研究[J].土木工程学报,2013,46(6):53-61.(WANG Yongquan,GUO Zhengxing,LUO Bin. Study on the determination method for the equivalent pre-tension in cables of spatial prestressed steel structure[J]. China Civil Engineering Journal,2013,46(6):53-61.(in Chinese))
[8]BETTI R,MARCONI G,KHAZEM D,et al. Experimental analysis of a nondestructive corrosion monitoring system for main cables of suspension bridges[J].Journal of Bridge Engineering,2013,18(7):653-662.
[9]YANG Wenjing,YANG Ping,LI Xueming,et al. Influence of tensile stress on corrosion behavior of high-strength galvanized steel bridge wires in simulated acid rain[J]. Materials and Corrosion,2012,63(5):401-407.
[10]王力力,易伟建.斜拉索的腐蚀案例与分析[J].中南公路工程,2007,32(1):93-98.(WANG Lili,YI Weijian. Cases analysis on cable corrosion of cable-stayed bridges[J]. Central South Highway Engineering,2007,32(1):93-98.(in Chinese))
[11]AOYAMA M,SHIBATA Y. Evaluation of corrosion on cast iron surfaces by fractal dimension analysis[J]. International Journal of Materials and Product Technology,2001(1):403-408.
[12]马野,袁志丹,曹金凤. ADINA有限元经典实例分析[M].北京:机械工业出版社,2012.
[13]丰磊.浙江大学体育馆斜拉索网吊挂钢屋盖施工关键技术研究[D].南京:东南大学,2009.
[14]张秋文,章永志,钟鸣.基于云模型的水库诱发地震风险多级模糊综合评价[J].水利学报,2014,45(1):88-95.(ZHANG Qiuwen,ZHANG Yongzhi,ZHONG Ming. A cloud model based approach for multi-hierarchy fuzzy comprehensive evaluation of reservoir-induced seismic risk[J]. Journal of Hydraulic Engineering,2014,45(1):88-95.(in Chinese))
[15]郭建斌,郑圣义.钢闸门腐蚀安全研究[J].腐蚀与防护技术,2006,18(1):73-76.(GUO Jianbin,ZHENG Shengyi.Research on corrosion of hydraulic steel gates[J]. Corrosion Science and Protection Technology,2006,18(1):73-76.(in Chinese))
[16]许红胜,吴佳东,黄娟,等.基于蚀坑参数的既有斜拉索钢丝腐蚀程度分级评价研究[J].中外公路,2015,35(6):148-151.(XU Hongsheng,WU Jiadong,HUANG Juan,et al. Study on evaluation of corrosion degree of existing cable steel wire based on pitting parameters[J]. Journal of China and Foreign Highway,2015,35(6):148-151.(in Chinese))
[17]中华人民共和国住房和城乡建设部.民用建筑可靠性鉴定标准:GB 50292—2015[S].北京:中国建筑工业出版社,2016.
[18]郑山锁,张晓辉,黄威曾,等.多龄期钢框架时变损伤模型研究[J].地震工程学报,2018,40(3):389-397.(ZHENG Shansuo,ZHANG Xiaohui,HUANG Weizeng,et al. Study on time-varying damage model of multi-age steel frame structures[J]. China Earthquake Engineering Journal,2018,40(3):389-397.(in Chinese))
[19]王晓飞,王鹏飞,贾虎,等.基于时变地震损伤模型的多龄期钢框架结构易损性分析[J].地震工程学报,2016,38(2):192-201.(WANG Xiaofei,WANG Pengfei,JIA Hu,et al. Seismic vulnerability analysis of multiage steel frame structures based on time-varying seismic damage model[J]. China Earthquake Engineering Journal,2016,38(2):192-201.(in Chinese))
[20]郑山锁石磊郑捷,等.近海大气环境下钢框架自振频率评估研究[J].地震工程学报,2016,38(5):673-677.(ZHENG Shansuo,SHI Lei,ZHENG Jie,et al. Assessment of natural frequency of steel frames in offshore atmospheric environment[J].China Earthquake Engineering Journal,2016,38(5):673-677.(in Chinese))
[21]张家超,杨海霞.结构损伤识别中的生物地理学优化算法[J].河海大学学报(自然科学版),2018,46(3):234-239.(ZHANG Jiachao,YANG Haixia. Biogeography-based optimization algorithm forstructural damage detection[J].Journal of Hohai University(Natural Sciences),2018,46(3):234-239.(in Chinese))