轨道交通高架桥桥面综合布置研究

为统一轨道交通桥梁桥面布置,分别研究不同列车型号、受电方式(接触网位置)、疏散方式、消防水管位置、电缆位置情况下的桥面布置,并对比各种布置方式的使用效果,确立较为统一的桥面宽度,推荐标准桥面布置宽度,应用于实际工程,取得了良好的经济和社会效益。     

Design method for steel deck plates under quasi-static patch loads with allowable plastic deformations

Plastic deformation of plates in steel deck structures under heavy vehicle or helicopter wheel loads is common in ships and offshore structures, and is therefore of significant interest to designers of ro-ro/cargo ships, helicopter-carrying ships and offshore platforms. To provide insight into the plastic deformation of plates, the nonlinear elasto-plastic response of stiffened steel plates loaded quasi-statically by a central rigid rectangular indenter is investigated both experimentally and numerically. The numerically-determined stiffened plate permanent deflections compare well with those obtained experimentally. The concept of applying the elasto-plastic method to the design of deck plates under wheel patch loads is introduced, and the design principle of wheel patch loaded plating is studied together with the design criteria. A simple design formula to determine plating thickness is proposed based on an acceptable level of permanent set. Ship-mounted helideck plating design cases are given to illustrate the elasto-plastic method, and comparisons are made between the thicknesses derived using the proposed design formula and those found from Lloyd's Register (LR), Bureau Veritas (BV) and DNV-GL rule requirements.     

桥面连续受力分析

对桥面连续在温度和荷载作用下的受力情况进行了分析,将要在今后设计工作中加以改进并在材料上和施工中加以完善。     

基于目标的甲板梁拱设计研究

以油船和散货船为对象,介绍了甲板梁拱的型式和作用,并对梁拱的设计进行了深入探讨。对于具有梁拱的船舶,甲板板的总纵弯曲应力如何计算,给出了一个有效的计算公式。对于甲板企口的设计也进行了详细的分析。得出了对于甲板梁拱的设计,虽然目前没有任何规范给出明确规定,但它对整个船舶设计的影响是深入的和全面的,应从基于使用目的和方便施工等目标进行综合考虑的结论。     

海洋结构物直升机甲板地喷灭火系统研究

该文主要介绍了海洋结构物直升机甲板地喷灭火系统的设计和选型研究,分析了地喷式泡沫灭火系统的优点。比较了使用LEVEL-B和LEVEL-C泡沫对系统选型的影响,分析表明使用LEVEL-C泡沫的地喷泡沫灭火系统可以满足规范要求,并可以降低消防水系统的配置要求。     

沥青混合料桥面铺装早期病害类型分析及措施

对沥青混合料桥面铺装出现的早期病害类型进行了分析,并提出相应的防治措施.     

关于混凝土桥面铺装的一点认识

混凝土桥面铺装破坏原因及设计施工要点.     

新型环氧沥青混合料（N-EA）和粘结剂性能试验评价研究

对一种新型研发的环氧沥青混合料（N -EA）和粘结剂进行了性能试验评价，对该环氧沥青混合料进行马歇尔稳定度、车辙、小梁弯曲、疲劳试验，以及环氧树脂粘结层拉拔试验，并与当前应用较多的日本 TAF环氧沥青和美国 ChemCo环氧沥青混合料的试验性能对比分析，结果显示这种新型研发的环氧沥青混合料和粘结剂具有良好的性能。     

Long-term prediction method for the green water load and volume for an assessment of the load line

 To develop a practical prediction method for the green water load and volume on the bow deck in irregular waves, model tests were conducted using a tanker and a cargo ship on a domestic Japanese voyage. The relation between green water load and relative water height at the stem was considered. Based on the finding that the maximum value of the green water load is proportional to the square of the maximum value of the water elevation over the bow top, the probability density functions of the green water load and volume in short-term predictions were proposed. It was verified that the proposed functions show good agreement with the measured distributions, especially in the tails, and were better than conventional functions. Using these functions, long-term predictions of the green water load were carried out. It was confirmed that the present method is more rational than the conventional one for estimating the long-term probability of the green water load. An assessment of the bow height of a domestic Japanese ship from the viewpoint of deck wetness was carried out using these prediction methods. This research was used as the technical background for the revision of domestic rules on load lines, which was enforced in October 2001. Received: July 19, 2002 / Accepted: October 30, 2002 Acknowledgment. Some of the present study was carried out as part of a cooperation project (RR45) with the Shipbuilding Research Association of Japan, supported by the Nippon Foundation. Address correspondence to: Y. Ogawa (e-mail: ogawa@nmri.go.jp)     

沥青混凝土桥面铺装早期病害原因分析

对沥青混凝土桥面铺装早期病害原因进行了分析.