谈热电联产项目工程建设中工艺管道的安装

详细介绍了热电联产项目工程建设中工艺管道的施工准备工作及安装方法.     

压力管道竖井开挖支护施工技术应用

压力管道是水电站建设不可缺少的建筑物,通常具有施工难度大,安全风险高,施工技术复杂的特点,且多位于关键线路上,影响整个水电站的施工进度和发电节点.主要通过某水电站的具体事例探讨压力管道竖井施工过程中的反井钻机开挖及支护技术的应用.     

给水管道爆裂的原因和对策

论述了供水企业输配水管发展爆管现象,针对管道管的原因进行分析及采取的对策措施。     

寒冷地区小城镇污水管道浅埋技术的运用

本文就污水管道线技术在实际运用时应注意的几个问题进行了介绍     

管道施工放线技术

就管道中线的放线和施工测量进行了详细的阐述。     

浅议给水管道材质的使用

介绍了新型给水管道材质的优良特性以及在材料检验、施工和选用方面的注意事项。     

过路管道顶管施工方法

本文结合具体工程 ,详细阐述了过路管道顶管施工方法及质量保证措施。在特定情况下使用该方法具有较好的适用性。     

道路管道敷设施工技术

管道敷设是道路施工中的重要组成部分。作者结合多年工作经验,详细阐述了道路管道敷设施工的各工艺流程及施工中的注意事项。     

浅谈室内地下排水管道铺设施工的注意事项及通病防治

本文总结了室内地下排水管道的施工经验,对施工中易发生的质量通病及解决方法做了详细介绍。对搞好室内地下排水管道施工具有一定的指导意义。     

顶管技术在市政给水管道施工中的应用

对顶管施工技术进行分析,以期达到有效解决施工遇到的技术难题,从而为市政给水管道施工提供便利。     

浅谈高层建筑新风竖井的设计

针对新风竖井风速过大而造成的不利性,提出了对风速较大的新风竖井进行加压送风的建议。     

浅谈循环流化床锅炉在运行中的若干问题及其防止

本文简单介绍了循环流化床锅炉在运行中极易出现的飞灰含碳量高、流化床结渣、冷渣管堵塞等问题,进行原因分析以及采取的相应防止措施。     

Bearing properties of engineered wood products I: effects of dowel diameter and loading direction

The embedment tests of laminated veneer lumber (LVL) with two moduli of elasticity (MOE; 7.8 GPa and 9.8GPa), parallel strand lumber (PSL), and laminated strand lumber (LSL) were conducted in accordance with ASTM-D 5764. The load-embedment relation for each of these engineered wood products (EWPs) was established. The directional characteristics of bearing strength (_e), initial stiffness (k _e), and effective elastic foundation depth were obtained from the tested results. The effective elastic foundation depth (=E/k _e,E = MOE), based on the theory of a beam on elastic foundation, was obtained from thek _e and MOE. An of 90° (perpendicular to the grain) was calculated by dividingE ₉₀ [MOE of 90° from the compression test, but MOE of 0° (E ₀), parallel to the grain, obtained from the bending test] byk _e90, the initial stiffness of 90°. This study aimed to obtain the bearing characteristics of each EWP, taking into consideration their anisotropic structures, for estimating the fastening strength of a dowel-type fastener. The relations between the bearing coefficients ( _e,k _e,) on the loading direction and dowel diameter were established from the load-embedment curves. Based on the results of the embedment test, tested EWPs showed different tendencies in all directions from wood and glued laminated timber.Part of this study was presented at the 49th Annual Meeting of the Japan Wood Research Society, Tokyo, April 1999