上海外环线浦东段(二期)沥青面层技术要点

该文对上海城市外环线浦东段 (二期 )工程沥青面层技术做了简要的介绍 ,提出了施工过程中重点考虑的因素。     

膨胀土地区路基水损害作用机理研究及防治对策

对我国膨胀土地区水损害机理进行了研究,归纳总结了对膨胀土路基水损害需采取排水、支挡、生物工程、避让等对策措施.     

揭阳市东山区沟口村民房墙体开裂问题研究

相邻建筑物在地基中产生的沉降总是相互影响,需要从新旧建筑物的强度、刚度、结构类型、地质情况、荷载大小等方面进行分析,从而提出对不同类型结构的处理方法。     

论海运提单的运输合同属性

通过提单的历史演变及有关立法及业务实际程序考察,论述提单的运输合同属性,更正有关立法的误会。     

分散压缩型锚索在船闸工程中的运用

主要介绍京杭运河淮安市淮安三线船闸土锚施工和试验情况。在软弱土层和复杂土质情况下,利用分散压缩型锚索的结构特点,通过土锚试验、完善设计、改进施工工艺等综合措施,保证达到设计承载力,对以后土锚的应用与发展起很大的作用。     

新型码头钢-混凝土组合面板

基于特殊需要,提出了带型钢加劲肋的钢板-混凝土组合板这一新型组合码头面板。以加劲肋形式、组合板厚度和栓钉布置为参数,进行了9块组合板的力学性能试验。试验结果表明,通过适当地选择型钢加劲肋形式、合理地布置栓钉和确定混凝土厚度,可以保证组合作用的发挥。组合板的正截面承载力可按基于修正平截面假定的极限状态计算;组合板的变形,可在按现行钢结构设计规范计算的基础上,加上考虑界面滑移影响的附加变形值予以修正。计算值与试验值吻合较好。     

因地制宜,综合施治,务实解决街坊小区积水顽症

上海市杨浦区某些街坊小区一遇暴雨即产生严重的积水问题。通过调查研究，找出病症，提出改造方案．有效地解决了小区的积水顽症。本文结合实际，总结了若干综合技术措施和行政管理、协调手段。     

带有改编能力限制的编组计划优化模型及算法

本文用一个非线性０－１规模模型，来描述带有改编能力限制的技术直达列车编组计划问题。能力约束增加了该问题的计算难度。这是一个ＮＰＣ问题。因此，获得一个全局最优解是困难的。本文用模拟退火算法解该问题。该算法可以以很高的概率获得全局最优解。文末列出了两个数值例子，并分别同了考虑和不考虑改编能车约束两种情况下的计算结果。     

Distribution of suspended sediment in the coastal sea off the Ganges–Brahmaputra River mouth: observation from TM data

Remote sensing technique was applied to estimate suspended sediment concentration (SSC) and to understand transportation, distribution and deposition of suspended sediment in the estuary and throughout the coastal sea, off the Ganges–Brahmaputra River mouth. During low river discharge period, zone of turbidity maximum is inferred in the estuary near the shore. SSC map shows that maximum SSC reaches 1050 mg/l in this period. Magnitude of SSC is mainly owing to resuspension of the bottom surface sediments induced by tidal currents flowing over shallow water depths. The influence of depth on resuspension is farther revealed from the distribution and magnitude of SSC along the head of Swatch of No Ground (SNG) submarine canyon. During high river discharge period, huge river outflow pushed the salt wedge and flashes away the suspended sediments in the coastal sea off the river mouth. Zone of turbidity maximum is inferred in the coastal water approximately within 5–10 m depth of water, where the maximum SSC reaches 1700 mg/l. In this period, huge fluvial input of the suspended sediments including the resuspended bottom sediments and the particles remaining in suspension for longer period of time since their initial entry control mainly the magnitude of SSC. In the estuary near the shore, seasonal variation in the magnitude of SSC is not evident. In the coastal sea (>5 m water depth), seasonal influence in the magnitude of SSC could be concluded from the discrepancy between SSC values of two different seasons. Transportation and deposition of suspended sediments also experiences seasonal variations. At present, suspended sediments are being accumulated on the shallow shelf (between 5 and 10 m water depth) in low discharge period and on the mid-shelf (between 10 and 75 m water depth) during high discharge period. An empirical (exponential) relationship was found between gradual settle down of suspended sediments in the coastal sea and its lateral distance from the turbidity maximum.     

一般状态下悬链线方程的应用

建立悬链线方程,分析悬链受力及方程的解法,结合实例运用悬链线方程计算锚链参数,完成工程船在具体海况下的锚泊设备选型。