地震条件下挡土墙被动土压力及其分布的微分薄层计算方法
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摘要
基于微分薄层法思想推导出被动土压力沿挡土墙墙高的非线性分布公式,研究了地震条件下分层土挡土墙被动土压力的计算方法。文中以墙后均匀填土挡土墙为例计算被动土压力,经与朗肯、库伦土压力理论公式的计算结果比较,有很好的吻合性。文章对被动土压力的分析和计算方法,突破了以往所研究的解析解均是针对单一、均质、各向同性填土的限制,可适用于多层不同性质填土的挡土墙被动土压力的计算。而文章计算得到的被动土压力合力的作用点位置低于朗肯、库伦被动土压力合力作用点位置,与以往多位学者相关研究的结论一致,也应该引起注意。
Based on the thin layer method,the non-linear distribution formula of retaining wall height under passive earth pressure was deduced,and the calculation method for passive earth pressure under seismic condition was discussed. By comparing the test results with those of the Rankine theory and Coulomb theory,it was found that the results were in consistency. Therefore,the calculation formula and method are suitable for calculating passive earth pressure of retaining wall of different multilayer nature filling. This break the limit of the previous works,of which the analytical solutions are only for single homogeneous isotropic filling. Here,the conclusion is consitstent with that of other researchers' work on this field,namely the point position of passive earth pressure determined by this method is lower than that of Rankine theory and Coulomb theory,which should also be noticed.
Based on the thin layer method,the non-linear distribution formula of retaining wall height under passive earth pressure was deduced,and the calculation method for passive earth pressure under seismic condition was discussed. By comparing the test results with those of the Rankine theory and Coulomb theory,it was found that the results were in consistency. Therefore,the calculation formula and method are suitable for calculating passive earth pressure of retaining wall of different multilayer nature filling. This break the limit of the previous works,of which the analytical solutions are only for single homogeneous isotropic filling. Here,the conclusion is consitstent with that of other researchers' work on this field,namely the point position of passive earth pressure determined by this method is lower than that of Rankine theory and Coulomb theory,which should also be noticed.
引文
[1]王渭漳,吴亚中.墙背土压力分布计算的新理论及其工程应用[M].北京:人民交通出版社,1996.
[2]林宇亮,杨果林,赵炼恒.地震条件下挡墙后黏性土主动土压力研究[J].岩土力学,2011,32(8):2479-2486.
[3]杨剑,高玉峰,程永锋,等.地震条件下倾斜挡土墙被动土压力研究[J].岩土工程学报,2009,31(9):1391-1397.
[4]王立强,王元战,迟丽华.挡土墙地震土压力及其分布[J].中国港湾建设,2007,(5):1-5.
[5]杨剑,高玉峰,程永锋,等.地震条件下倾斜挡土墙被动土压力研究[J].岩土工程学报,2009,31(9):1391-1397.
[6]高玉峰,杨剑,程永锋,等.倾斜挡土墙被动土压力研究[C]//第二届全国环境岩土与土工合成材料学术大会,2008:138-142.
[7]杨剑,王荣文,沈晔,等.挡土墙与土界面摩擦角为负的地震被动土压力解析解[J].岩土工程学报,2011,33(5):785-791.
[8]陈希哲.土力学与地基基础[M].北京:清华大学出版社,1998.
[9]顾慰慈.挡土墙土压力计算手册[M].北京:中国建材工业出版社,2005.
[10]杨雪强.分层填土作用在挡土墙上的主动土压力[J].湖北工学院学报,2001,16(1):59-61.
[11]应宏伟,蒋波,谢康和.考虑土拱效应的挡土墙主动土压力分布[J].岩土工程学报,2007,29(5):717-722.
[12]杨和平,谭波.用改进层分法计算分层粘性填土主动土压力[J].西部交通科技,2009,(2):22-28.
[13]周应英,任美龙.刚性挡土墙主动土压力的试验研究[J].岩土工程学报,1990,12(2):19-26.
[14]周海林,冷伍明.挡土墙墙背分层填土的土压力计算与改进[J].路基工程,2000,(1):8-11.
[15]章瑞文,徐日庆.平移模式下挡土墙墙背土侧压力系数的计算[J].中国公路学报,2007,20(1):14-18.
[16]章瑞文,徐日庆,郭印.挡土墙墙后土体应力状态及土压力分布研究[J].浙江大学学报:工学版,2008,42(1):111-115.
[2]林宇亮,杨果林,赵炼恒.地震条件下挡墙后黏性土主动土压力研究[J].岩土力学,2011,32(8):2479-2486.
[3]杨剑,高玉峰,程永锋,等.地震条件下倾斜挡土墙被动土压力研究[J].岩土工程学报,2009,31(9):1391-1397.
[4]王立强,王元战,迟丽华.挡土墙地震土压力及其分布[J].中国港湾建设,2007,(5):1-5.
[5]杨剑,高玉峰,程永锋,等.地震条件下倾斜挡土墙被动土压力研究[J].岩土工程学报,2009,31(9):1391-1397.
[6]高玉峰,杨剑,程永锋,等.倾斜挡土墙被动土压力研究[C]//第二届全国环境岩土与土工合成材料学术大会,2008:138-142.
[7]杨剑,王荣文,沈晔,等.挡土墙与土界面摩擦角为负的地震被动土压力解析解[J].岩土工程学报,2011,33(5):785-791.
[8]陈希哲.土力学与地基基础[M].北京:清华大学出版社,1998.
[9]顾慰慈.挡土墙土压力计算手册[M].北京:中国建材工业出版社,2005.
[10]杨雪强.分层填土作用在挡土墙上的主动土压力[J].湖北工学院学报,2001,16(1):59-61.
[11]应宏伟,蒋波,谢康和.考虑土拱效应的挡土墙主动土压力分布[J].岩土工程学报,2007,29(5):717-722.
[12]杨和平,谭波.用改进层分法计算分层粘性填土主动土压力[J].西部交通科技,2009,(2):22-28.
[13]周应英,任美龙.刚性挡土墙主动土压力的试验研究[J].岩土工程学报,1990,12(2):19-26.
[14]周海林,冷伍明.挡土墙墙背分层填土的土压力计算与改进[J].路基工程,2000,(1):8-11.
[15]章瑞文,徐日庆.平移模式下挡土墙墙背土侧压力系数的计算[J].中国公路学报,2007,20(1):14-18.
[16]章瑞文,徐日庆,郭印.挡土墙墙后土体应力状态及土压力分布研究[J].浙江大学学报:工学版,2008,42(1):111-115.
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