桥梁吸能型连梁装置控制管冲击轴向荷载与吸能形式
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摘要
吸能型连梁装置是在普通连梁装置上改进而来的防落梁装置,其主要吸能部件为控制管。为了给控制管的设计与优化提供可靠的理论依据,通过对控制管在冲击条件下的理论分析和有限元模拟,并结合准静态下实验,得出吸能型连梁装置中控制管轴向方向的荷载理论与控制管的吸能形式。结果表明:通过主应力法所得到的控制管在扩径时轴向荷载理论能够在设计中适用。并且由有限元软件ANSYS/LS-DYNA分析得出控制管是通过塑性变形和摩擦的形式进行吸能的结论,为以后对控制管的设计与优化提供有益的参考。
The energy-absorbing type continuous beam device is an improved anti-falling beam device on the common continuous beam device, and its main energy absorbing components are control tubes.In order to provide a reliable theoretical basis for the design and optimization of the control tube in the energy-absorbing continuous beam device, based on the theoretical analysis and finite element simulation of the control tube under the impact condition and the static experiment, the load theory of the control tube axial direction and the energy absorption form of the control tube are obtained. The results show that the axial load theory obtained by the principal stress method can be applied in the design. The control tube, which is analyzed by finite element software ANSYS/LS-DYNA, is the conclusion of absorbing energy by means of plastic deformation and friction, which provides excellent reference for the design and optimization of the control tube.
The energy-absorbing type continuous beam device is an improved anti-falling beam device on the common continuous beam device, and its main energy absorbing components are control tubes.In order to provide a reliable theoretical basis for the design and optimization of the control tube in the energy-absorbing continuous beam device, based on the theoretical analysis and finite element simulation of the control tube under the impact condition and the static experiment, the load theory of the control tube axial direction and the energy absorption form of the control tube are obtained. The results show that the axial load theory obtained by the principal stress method can be applied in the design. The control tube, which is analyzed by finite element software ANSYS/LS-DYNA, is the conclusion of absorbing energy by means of plastic deformation and friction, which provides excellent reference for the design and optimization of the control tube.
引文
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[2] 左烨,孙广俊,李鸿晶. 中外桥梁抗震设计规范有关防落梁的比较与研究[J]. 防灾减灾工程学报,2016, (4):617-623Zuo Ye, Sun Guang-jun, Li Hong-jing. Comparison and research on anti-falling beam of seismic design code of bridge in China and abroad[J]. Journal of Disaster Prevention and Mitigation Engineering, 2016, (4): 617-623(in Chinese)
[3] 邢心魁,王逸飞. 桥梁吸能型连梁装置控制管吸能特性研究[J]. 工程抗震与加固改造,2017,39(5):137-142Xing Xin-kui, Wang Yi-fei. Study on energy absorption characteristics of the control tube of bridge energy-absorbing type continuous beam device[J].,Earthquake Resistant Engineering and Retrofitting, 2017,39(5): 137-142(in Chinese)
[4] 李文彬. 梁式桥防落梁加固技术研究[D].哈尔滨:中国地震局工程力学研究所,2016Li Wen-bin. Study on the reinforcement technology of Beam bridge anti-falling beam [D]. Harbin:Institute of Engineering Mechanics, China Seismological Bureau, 2016(in Chinese)
[5] 方磊,张煜敏. 连梁装置在地震序列作用下的作动分析[J]. 科技导报,2011,(13):24-28Fang Lei, Zhang Yu-min. Dynamic analysis of coupling beam device under the action of earthquake sequence[J]. Science and Technology Herald, 2011, (13): 24-28(in Chinese)
[6] 潘中森,田石柱.拉索式连梁装置设计参数对连续刚构桥抗震效果的影响[J].常州工学院学报,2017, (3):16-21Pan Cheng-sen, Tian Shi-zhu.The influence of design parameters of cable-type continuous beam device on seismic effect of continuous rigid frame bridge[J].Journal of Changzhou Institute of Technology, 2017, (3): 16-21(in Chinese)
[7] 刘健新, 赵国辉,等. 西安市新机场高速公路桥梁抗震分析报告[R]. 西安:西安长安大学公路学院,2006Liu Jian-xin, Zhao Guo-hui, et al. Report on seismic analysis of expressway bridge in Xi′an new airport [R].Xi′an:Xi′an Chang’an University Highway College, 2006(in Chinese)
[8] 朱万旭,黄颖,周红梅,等.防止落桥装置[A].中国公路学会桥梁和结构工程分会,2002 年全国桥梁学术会议论文集[C].北京:人民交通出版社,2002Zhu Wan-xu, Huang Ying, Zhou Hong-mei, et al. An anti-landing device [A].Chapter of Bridge and structural Engineering, China Highway Society.Proceedings of the 2002 National academic Conference on Bridges [C]. Beijing: People′s Communications Press, 2002(in Chinese)
[9] 杨辉,王武生.利用钢管扩胀变形吸能的特性提高汽车抗撞性能[J].汽车工程,2008,(11):987-989Yang Hui, Wang Wu-sheng. To improve the crashworthiness of automobile by using the characteristic of expansion and deformation of steel tube[J].Automotive Engineering, 2008, (11): 987-989(in Chinese)
[10] 徐磊,贾大伟,俞麒峰.薄壁金属管吸能器的吸能特性分析[J].计算机辅助工程,2013,(S2):1-5Xu Lei, Jia Da-wei, Yu Qi-feng. Energy absorbing characteristics of thin-walled metal tube absorber[J]. Computer Aided Engineering, 2013, (S2): 1-5(in Chinese)
[11] 杜汇良,尹志,马春生,等.基于金属圆管扩胀变形的碰撞波形发生器设计[J].机械设计与研究,2007,(1):98-100Du Hui-liang, Yin Zhi, Ma Chun-sheng, et al. Design of the collision waveform generator based on the expansion deformation of metal tube[J]. Mechanical Design and Research, 2007, (1): 98-100(in Chinese)
[12] 周薛融,吴中.列车防撞压溃管吸能研究[J].中国铁路,2011,(2):80-82Zhou Xue-rong, Wu Zhong. Study on the absorbing energy of the train crash-break tube[J]. China Railways, 2011, (2): 80-82(in Chinese)
[13] 马春生,张金换,杜汇良,等.胀环式飞船座椅缓冲器建模方法研究[J].振动与冲击,2009, (4):90-92Ma Chun-sheng, Zhang Jin-huan, Du Hui-liang, et al. Research on the modeling method of the expansion-ring spacecraft seat buffer[J]. Journal of Vibration and Shock, 2009, (4): 90-92(in Chinese)
[14] 吴鸿超. 薄壁金属管在中高速冲击下的缓冲特性研究[D].太原:中北大学,2016Wu Hong-chao. Study on buffering characteristics of thin-walled metal tube under medium and high speed impact [D]. Taiyuan: North Central University, 2016(in Chinese)
[15] 陈俊岭,舒文雅,李金威.Q235钢材在不同应变率下力学性能的试验研究[J].同济大学学报(自然科学版),2016,(7):1071-1075Chen Jun-ling, Shu Wen-ya, Li Jin-wei. Experimental study on mechanical properties of Q235 steels under different strain rates[J]. Journal of Tongji University(Natural Science Edition), 2016, (7): 1071-1075(in Chinese)
[16] 马彦婷. 胀管式缓冲器吸能特性及优化设计研究[D]. 秦皇岛:燕山大学, 2014Ma Yan-ting. Study on energy absorption characteristics and optimum design of tube-expanding buffer [D]. Qinhuangdao: Yanshan University, 2014(in Chinese)
[17] 蔡锦达,程曦,付翔,等.锥形模机械扩径力计算与主要影响因素分析[J].中国机械工程,2010,21(5):599-602CaiJin-da, Cheng Xi, Fu Xiang, et al. Calculation and main influencing factors of tapered die machine[J]. Chinese mechanical Engineering, 2010,21 (5): 599-602(in Chinese)