共查询到20条相似文献,搜索用时 609 毫秒
1.
板桩码头向深水化发展的方案构思和实践--遮帘式板桩码头新结构的开发 总被引:6,自引:0,他引:6
针对板桩结构型式仅适用于中小码头建设这一长期困扰水运工程界的课题,研究开发了半遮帘式和全遮帘式板桩码头结构型式.在京唐港区2万t级板桩码头改造为5万t级泊位工程中,利用半遮帘桩减小作用于原前板桩下半部分的土压力,而且不设锚碇拉杆,取得了成功;采用全遮帘式板桩结构,又成功建设了10万t级深水泊位.经南京水利科学研究所进行离心模型试验,验证了设计是正确的. 相似文献
2.
遮帘式深水板桩码头建设实践和经验研究 总被引:1,自引:1,他引:0
介绍唐山港京唐港区在粉沙质海岸建港,采用挖入式港池布置、遮帘式板桩结构型式建设万t级深水码头的不断研究、探索和实践的发展历程.对10万t级遮帘式深水板桩码头谋划以及设计、科研、施工建设经验进行了系统总结. 相似文献
3.
4.
5.
6.
结合某港码头加深改造工程的技术经济研讨,推出了一种新的码头结构型式——半遮帘式板桩码头结构,并提出了相应的设计计算方法。由于该结构型式所具备的一系列优点,将为码头改造工程开辟一个新的思路。 相似文献
7.
8.
唐山港京唐港区是地连墙码头结构研究与应用的大型基地 总被引:2,自引:2,他引:0
简要介绍唐山港京唐港区采用地连墙结构型式建设深水泊位的成功经验,并对挖入式港池的优点、地连墙码头结构的特点、半遮帘式、全遮帘式板桩码头结构产生的过程、建成意义进行了综合论述. 相似文献
9.
10.
本文利用ABAQUS有限元分析软件,针对某10万t级散货码头遮帘式板桩结构进行数值建模,对比了数值计算结果和理论结果的差异,论证了数值模型的可靠性,分析了差异产生的原因。对比分析了有遮帘存在和无遮帘存在对前墙陆侧土压力和位移的影响,数值计算结果表明,遮帘的存在可以达到减小结构受力和位移的目的。 相似文献
11.
12.
厦门港码头的结构型式主要为重力式和高桩,钢板桩结构在码头建设中应用不多.在厦门现代物流园区5000t级杂货码头工程中,由于受到周边条件的制约,码头主体采用钢板桩结构型式.以本工程为例,详细介绍钢板桩码头设计与施工的要点,以期为类似码头工程的建设提供借鉴和参考. 相似文献
13.
14.
钢板桩码头与其他钢板桩临时围护结构的不同之处在于其环境温度的变化幅度较大,钢板桩的温度应力对码头结构有一定影响。采用ABAQUS有限元软件模拟码头钢板桩与土体的相互作用,结合工程实例采用修正剑桥弹塑性模型在应力场中耦合温度场,分析冬季和夏季极限温度条件下钢板桩码头的温度应力响应,可供钢板桩码头结构设计和相关研究参考。 相似文献
15.
Corrosion of steel structures in the marine environment is a major problem. The deterioration of this kind of structures is costly and difficult to predict both when designing new structures and when estimating the remaining service life time for existing structures. The aim of this investigation was to find indicative values for the corrosion rate of steel sheet piles on the Swedish west coast. Such corrosion rates (mm/year) can be used both when designing new structures by oversizing the steel thickness and when estimating the bearing capacity of existing sheet pile structures. Earlier investigations on the corrosion rates along the Swedish east coast – with salinity from about 0.2% to 0.8% – are still used today as guidelines for the corrosion rate of all steel structures in the Swedish maritime environment even though the salinity on the west coast can be as high as 3.0%.Steel sheet pile wharfs located in the port of Halmstad on the Swedish west coast were inspected by ultrasonic measurements. Three wharf structures with a total length of about 700 m were inspected. None of the inspected wharfs had or have had cathodic protection. The thickness measurements of the steel sheet pile structures were performed by divers.The age of the three inspected sheet pile structures ranged from 36 to 51 years. The dimensions of the original sheet pile sections are known. One of the quay structures is located along a river. The salinity at all wharfs varied from low values at the surface to approx. 2% at the bottom (also in the river outflow).The measured average corrosion rates were in the same order as the design values in the European code. However, the results indicate increased corrosion rates about 1 m below the mean water surface and at the level of the propellers from the ships berthing the most frequented of the inspected wharfs, 3–6 m below water surface.The tolerances of steel sheet thicknesses – usually in the order of ±6% – are often neglected when investigating the remaining thickness in steel sheet piles. A simple calculation model shows that the sheet pile must be almost 50 years of age before an accurate estimation on the corrosion rate can be made, considering the tolerances, if the true original sheet pile thickness is not known. 相似文献
16.
17.
18.
介绍镇海算山码头#7泊位5万吨级成品油码头兼靠10万吨级油轮的改造设计。对泊位长度、靠泊设施间距、泊位作业标准和平面水域等进行全面论证,对码头水工建筑物的设计荷载、结构内力进行复核计算。本着投资少、工期短、施工简单和对生产影响小的原则,提出对码头上的登船梯、系船设施等进行必要的改造,以满足兼靠10万吨级油轮的需要。 相似文献
19.
20.
混凝土裂缝是板桩码头上部结构施工的质量通病之一,长期得不到有效地治理。通过分析板桩码头上部结构施工中常见混凝土裂缝的成因,从施工质量控制的角度出发,提出减少混凝土裂缝的具体方法,使板桩码头上部结构的表观质量得到改善,进一步提升了板桩码头整体结构的安全性和耐久性。 相似文献