以某坐落在岩基上的闸首底板为例,考虑水化热温升、外界气温、弹性模量、外部约束条件、施工工艺等因素的影响,采用有限元仿真分析方法,计算其温度场及应力场.结果表明坐落在岩基上的闸首底板将产生较大的温度应力.提出了设置横向结构缝与减薄底板厚度两种温控措施,计算结果表明两种措施都是有效的.

某船闸大堤存在渗流安全隐患,进行防渗处理后对大堤的渗流状况进行了原型观测,并对观测的结果进行了分析.由于观测的随机性,未观测到大堤在设计洪水位和校核洪水位下的渗流数据.在原型观测的基础上,应用有限元方法对大堤在两工况下的防渗情况进行了预报,为类似工程的设计与施工提供依据和参考.

Covered pile has been widely used as a kind of retaining pile in some projects,such as like deep-water port projects,excavating projects for foundation ditches,and retaining wall projects. The FEM software ANSYS is employed for the analysis of the 3D finite covered pile model in the paper,and the excavating process of a sheet pile wharf is simulated. The factors such as rigidity,length,space of covered piles,and space between the covered pile and sheet-piled wall are detailed in the paper,which influence the sheet pile model before and after the excavating works. The paper also puts forward the covered piles′ rational layout to control the distortion of the sheet-pile wall after the excavating works. The results show that the distortion,active earth pressure and movement will be reduced effectively when the covered piles are longer and have greater rigidity. But the space between covered piles and the space between the covered pile and the sheet-piled wall have little effect.

教学模式的改革是教育教学改革的热点,针对目前高等工科院校存在"培养模式单一"、"对学生缺乏创新意识和创新能力培养"等问题,提出了研究型课程教学模式建立的思路及实施方法,以期对改革大学工科课程的教学方法有一定的参考和借鉴作用.