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排序方式： 共有77条查询结果，搜索用时 15 毫秒
31.
Lian Gan Ni Kan Hu Kai Guo Dawei Prof. Senior Engineer Marine Design Research Institute of China Shanghai Senior Engineer Marine Design Research Institute of China Shanghai Engineer Marine Design Research Institute of China Shanghai 《中国海洋工程》1991,(4)
In this paper, a single-column structure used as well-head platform is studied. The loads of wave and current exerted on the single-column will be greatly reduced, therefore the cost of the structure will be decreased. The advantages of the single-column structure compared with ordinary jacket structure are explained. A dynamic analysis of this type of structure is made and some problems related to dynamic analysis are solved. In order to check the reliability of computation theory and programme, model tests have been carried out. However, as space is limited, the conclusion of tests will be introduced in another paper. Therefore, this type of structure is applicable for proctical engineering. 相似文献
32.
This paper presents the detail design conditions, design criteria and methods as well as design conclusions of the process, structure and corrosion of the production flowlines and high pressure water injection lines in BZ34-2 / 4 oil field in Bohai Bay. At present this design represents the design capability and level in the field of the submarine pipeline engineering of China. 相似文献
33.
Analysis of Wave Height in Front of a Wave Absorbing Structure with Rubble Foundation 总被引：1，自引：0，他引：1
Li Rongqing Xie Shileng Engineer The First Design Institute of Navigation Engineering The Ministry of Communications Tianjin Professor Senior Engineer Deputy Chief Engineer The First Design Institute of Navigation Engineering The Ministry of Communications Tianjin 《中国海洋工程》1992,(3)
Wave absorbing structures have been widely applied in many countries. In the present paper, the wave heights in front of a vertical wave absorbing structure with rubble foundation as well as in the wave chamber of the structure are analysed using an approximative calculation method, and the dissipating effect of the structure is verified. On the basis of the results of regular waves, the relative wave heights of irregular waves in front of the wave absorbing structure as well as in the chamber have also been analysed. 相似文献
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35.
A series of regular and irregular wave experiments are conducted to study the reflective and transmitting performances of quarter circular breakwater (QCB) in comparison with those of semi-circular breakwater (SCB). Based on regular wave tests, the reflection and transmission characteristics of QCB are analyzed and a few influencing factors are investigated. Then, the wave energy dissipation as wave passing over the breakwater is discussed based on the hydraulic coefficients of QCB and SCB. In irregular wav... 相似文献
36.
介绍了含水层储能地下温度场和地下流场(TH)耦合运移的机理;针对加拿大BORDEN含水层储能试验及观测数据,根据实际土层工程地质、水文地质和初始温度条件,建立了BORDEN储能试验的TH耦合3D数值模型。将模拟结果与实际观测数据进行对比,二者非常接近,符合理论和实际观测情况;模拟了热羽逐渐移动的规律,证明利用TOUGH软件在地下TH耦合模拟方面的准确性和实用性,为将来的地下含水层储能工程设计提供理论基础和参考依据。 相似文献
37.
为正确认识流体充填钻孔中管波的传播规律,首先给出均匀各向同性介质中包含流体充填钻孔条件下的弹性波动力学方程和二阶速度-应力公式及差分格式的稳定性条件和边界条件;然后利用高阶交错网格有限差分法,结合典型模型,模拟了不同时刻管波的传播快照和复杂层状介质中管波的合成地震记录,并与实际管波地震记录进行了对比。结果表明:在地层分界面、溶洞的边界等波阻抗差异界面处,管波都会产生反射;反射管波的振幅、频率特征受界面两侧的岩石物理性质差异的影响;在理论合成记录中,反射管波与直达管波同相轴的交点与理论模型中地层分界面或异常体的边界一致。 相似文献
38.
梁柱-板柱组合结构(住宅)体系模型振动台试验研究 总被引：2，自引：0，他引：2
梁柱-板柱组合结构(住宅)体系由上部大开间板柱结构和底部框架结构构成，是一种可持续发展的新型结构形式。通过两个12层l：15模型的振动台对比试验，探讨其动力特性、地震反应和破坏情况。试验表明，该体系的抗震性能介于框架结构和板柱结构之间。总层数在12层以下时，不设剪力墙的该体系在7度区基本上满足规范要求，合理设置剪力墙后可用于8度区。 相似文献
39.
本文介绍了用深层搅拌桩作围护桩挡土挡水时,因桩质量不好,造成边坡渗水涌砂,采用压密注浆法,处理渗水涌砂的经验。 相似文献
40.