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结合东海大桥港桥连接段大乌龟岛至颗珠山岛海堤施工期间的沉降观测资料,对海堤典型断面深厚软基未打穿塑料排水板堤基的沉降及沉降历程进行了详细的分析,对国内常用的根据实测沉降曲线推算最终沉降方法在此条件下的适用性进行了探讨,并据此对工后沉降进行了预测,供类似工程参考。 相似文献
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1997年,已经步入亿万富豪之列的深圳地产商人王树春,只因一场与深圳三门岛的美丽邂逅隐退商海。在他看来,很多东西比钱重要,比如自由和理想。他说自己更像是现代版的鲁滨逊,直到他发现并“占领”了三门岛,四处飘荡的梦想才找到了落地生根之处。于是,他安心的做起了中国第一岛主。并在这个属于自己的王国里,制定出“王氏岛规”。 相似文献
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Measurements of turbulence were performed in four frontal locations near the mouths of Block Island Sound (BIS) and Long Island Sound (LIS). These measurements extend from the offshore front associated with BIS and Mid-Atlantic Bight Shelf water, to the onshore fronts near the Montauk Point (MK) headland, and the Connecticut River plume front. The latter feature is closely associated with the major fresh water input to LIS. Turbulent kinetic energy (TKE) dissipation rate, ε, was obtained using shear probes mounted on an autonomous underwater vehicle. Offshore, the BIS estuarine outflow front showed, during spring season and ebb tide, maximum TKE dissipation rate, ε, estimates of order 10− 5 W/kg, with background values of order 10− 6 to 10− 9 W/kg. Edwards et al. [Edwards, C.A., Fake, T.A., and Bogden, P.S., 2004a. Spring–summer frontogenesis at the mouth of Block Island Sound: 1. A numerical investigation into tidal and buoyancy-forced motion. Journal of Geophysical Research 109 (C12021), doi:10.1029/2003JC002132.] model this front as the boundary of a tidally driven, baroclinically adjusted BIS flow around the MK headland eddy. At the entrance to BIS, near MK, two additional fronts are observed, one of which was over sand waves. For the headland site front east of MK, without sand waves, during ebb tide, ε estimates of 10− 5 to 10− 6 W/kg were observed. The model shows that this front is at the northern end of an anti-cyclonic headland eddy, and within a region of strong tidal mixing. For the headland site front further northeast over sand waves, maximum ε estimates were of order 10− 4 W/kg within a background of order 10− 7–10− 6 W/kg. From the model, this front is at the northeastern edge of the anti-cyclonic headland eddy and within the tidal mixing zone. For the Connecticut River plume front, a surface trapped plume, during ebb tide, maximum ε estimates of 10− 5 W/kg were obtained, within a background of 10− 6 to 10− 8 W/kg. Of all four fronts, the river plume front has the largest finescale mean-square shear, S2 ~ 0.15 s− 2. All of the frontal locations had local values of the buoyancy Reynolds number indicating strong isotropic turbulence at the dissipation scales. Local values of the Froude number indicated shear instability in all of the fronts. 相似文献
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人工岛围垦技术的探讨 总被引:1,自引:0,他引:1
为解决我国沿海地区土地资源短缺制约经济发展的问题,以围垦方式建设人工岛可基本保持海岸的天然原始状态,有利于保护岸线和滨海湿地资源,使项目用海更具科学性和持续性,体现了目前国际上较先进的用海理念。提出人工岛选址和规划建设的原则,初步探讨人工岛总平面布置、堤坝护岸结构选型、陆域填筑施工、陆岛交通方式和对海洋生态环境影响等关键技术问题。 相似文献
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开敞水域蝶形码头泊位的长度 总被引:1,自引:0,他引:1
结合工程实例,说明按我国水运工程技术规范和OCIMF系泊设施指南、英国海工结构规范得出的蝶形泊位长度的悬殊差别;简述Optimoor软件在国内的应用情况。 相似文献
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蔡朋岑 《舰载武器(含VCD光盘)》2007,(6):50-54
作战部署
1965年11月13日13时20分,国民党海军南区巡逻支队旗舰“永泰”号率“永昌”号由澎湖列岛的马公起航,驶往乌丘执行任务。“永泰”号是一艘大型猎潜舰,排水量600吨,全载903吨,装有2门76毫米炮、3门40毫米炮和6门20毫米炮。“永昌”号是一艘护航炮舰,排水量650吨,全载954吨, 相似文献
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洋口人工岛是南通洋口港区陆岛跨海通道的终点、现代物流仓储的基地和液化天然气接收站的承载平台。文章以洋口人工岛工程为例,以水力计算为理论依据,从龙口的合龙时机、龙口位置和宽度确定、龙口防护、堵口方法和顺序以及龙口合龙过程中需注意的要点几个方面对龙口的合龙进行了分析和探讨。 相似文献
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东海岛大桥跨海大桥处于海洋环境中,桥梁结构设计时重点从耐久性的角度考虑,上部结构选择少暴露面的宽幅小箱梁,下部结构选择小间距大挑臂双柱桥墩,在此基础上.根据海洋环境中影响结构耐久性的环境分区,对结构不同部位采用相应的耐久性设计方法和措施。 相似文献
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结合宏观经济与公路交通发展的实际,阐述了建设海上距离21.5 km的台州市大陈岛跨海大桥之必要性与可行性,提出了以桥促港、以桥兴岛、以港立市的战略构想。 相似文献
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