斜壁桶形基础水平承载力的三维有限元分析

利用有限元软件ABAQUS对桶形基础受水平荷载进行数值模拟,并与模型试验结果进行对比.通过数值计算,分析饱和软黏土中单个斜壁桶形基础受水平荷载后的破坏模式.通过变动参数,分别探讨研究了土体有效重度、土体不排水抗剪强度、桶体等效长度和宽度、荷载作用高度对饱和软黏土中单个斜壁桶形基础水平承载力的影响及相对敏感性.     

“大”兰州拉面

假,我们全家去兰州旅游。7月的兰州骄阳似火,我们参观完"风车园"出来已经饥肠辘辘了。对面正好有一家兰州拉面店。太好了,鼎鼎有名的兰州拉面耶!来到店里,选定位子坐下,一位兰州小姑娘热情地过来招呼我们。我说:"我要一碗牛肉拉面!"哥哥说:"我也要一碗牛肉拉面!"妈妈看了爸爸一眼,说:"请给我们四个人一人一碗牛     

Virtual reality and visual simulation technology in platform construction with four bucket foundations based on secondary development of Vega

The platform with bucket foundations can penetrate and migrate by underpressure/positive pressure technique caused by pumping water out/in the bucket. However, the construction process of bucket foundations cannot be clearly observed and effectively controlled due to the special nature of sea environment. By using an advanced simulation development tool of Multigen Creator, the visual construction simulation program for the platform with bucket foundations was developed to set up the virtual reality system with interaction control and observation in every view angle based on the secondary development technology of Vega platform. The application results show that the method is feasible and effective by simulating the whole construction process for the platform with four bucket foundations.     

教育园地里的“淘金者”——记湖南省第七届“徐特立教育奖”获得者、湘潭市雨湖区风车坪学校校长张利萍

张利萍,女,中共党员。湖南省教师队伍建设专家库成员,"国培计划"2012年湖南省农村小学数学骨干教师短期集中培训项目首席专家,全国义务教育语文教学研究中心湖南中心第一届理事会理事,湖南省小学管理协会理事,湖南省教育学会小学品德课程教学研究专业委员会第一届理事会理事,湖南省中小学教师继续教育研究会班主     

小车的联想

伟大的科学家牛顿,少年时候,看到书上讲的或是观察到周围的新鲜事物,总爱动脑筋想一想,动手去做一做。他看到旋转的风车,自己就做了个玲巧的风车模型,还放进一只小老鼠,让它蹬着风车转。看到在蓝天飘动的风筝,他也动手做了一     

Dynamic Simulation on Collision Between Ship and Offshore Wind Turbine简

By using ABAQUS/Explicit, the dynamic process of an offshore wind turbine（OWT） stricken by a ship of 5000DWT in the front direction is simulated. The OWT is located on a large-scale prestressing bucket foundation constructed by an integrated installation technique. According to the simulation results, under the ship collision, a cer-tain range of plastic zone appears within a local area of arc transition structure of the bucket foundation, and the con-crete plastic zone is seriously damaged. As the stress level of OWT tower is relatively low, the OWT tower is less af-fected. A great inertial force is generated at the top of the OWT tower as the mass of nacelle and blades is up to 400 t. The displacement of the tower is in the opposite direction of the ship collision at the end of 1 s under the action of iner-tial force. There is only a minor damage in the ship bow. Most of the kinetic energy is transformed into the plastic dissipation and absorbed by the arc transition structure of bucket foundation.     

金德代克-埃尔斯豪特的风车群

<正>金德代克-埃尔斯豪特的风车群位于荷兰西部。在中世纪时,它们的作用是将低田中多余的水抽出来,然后排泄到附近的河流湖泊中。这些风车保存到今天,依然完好无缺。如今,在夏天的一段时间里,风车再次得以被"使用"。不过,这时候,它主要用于旅游者的观光,而不是抽水了。当地人们还建立了一个小型博物馆,内容是关于荷兰有风车家庭的生活情况。游客们还可以沿着运河和河流散步,到近处细细观看这些巨大的风车,欣赏这儿美丽如画的风景。     

美科学家开发手机充电风车：直径仅1．8毫米

北京时间1月20日消息,忘掉手摇式充电器和太阳能充电器吧,解决经常存在的手机电池没电问题的最新方法是利用空气。     

“洗衣盆”悄然给风加速

日本人会让风悄然加速对于煤和石油比较缺乏的日本来说,风力发电占较大的比重。风力发电的技术已经比较成熟了,科学家们都知道,风速越大,发出的电能越多,它们之间的关系是:发电量与风速的3次方成正比。即风速增加2倍,发电量会增加8倍。因此,如何为风力发电机寻找多风的地方很重要。