共查询到18条相似文献，搜索用时 140 毫秒
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伸缩缝作为桥梁整体构造中重要的组成部分,其质量的好坏直接影响着桥面的美观以及桥梁的通车质量,对桥梁的整体结构冲击也很大。文章对桥梁伸缩缝的质量控制谈几点体会与建议,以期为后期的伸缩缝控制提供指导性建议。 相似文献
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混凝土结构中建筑物的长度超过规范要求就需要做特殊处理,即设置伸缩缝等。本文就混凝土结构中应设的伸缩缝和沉降缝是否均可设后浇带解决,阐述自己的观点。 相似文献
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软木伸缩缝填料用作水电站钢蜗壳垫层材料的探讨 总被引：1，自引：0，他引：1
就软木伸缩缝填料用作水电站钢蜗壳垫层材料进行探讨,分析其作用和效果;介绍软木的特性以及软木伸缩缝填料的生产工艺;并对几种常用的垫层材料进行试验对比分析.试验结果表明,软木伸缩缝填料适合作大、中型水电站钢蜗壳外包垫层的材料. 相似文献
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《Wood material science & engineering》2013,8(3):188-197
Abstract Joints are generally the weakest part of furniture and they are primary cause of failure. To ensure durability and performance of furniture, it is important for a designer to understand the stresses acting on the joints for preparing suitable design and specification of a furniture. Since each type of joint is unique in construction, it is important to know their strength, when subjected to various stresses namely shear, bending, and tensile, by testing the joints. Since there is no established test method for joints, this study was carried out to categorize joints based on their shape, identify the stresses acting over them and develop test methods for testing furniture joints in three modes namely shear, bending, and tension, which are required for designing joints of any furniture and also provide means of comparing strength of different types of joints. Different types of furniture joints were taken for the study and were classified based on their shapes such as L-shaped, T-shaped, straight, and corner joints. Six types of jigs (one type for bending, two types for shear, and three types for tension) were designed and developed for testing the joints, in such a way that any type of joint can be tested in three modes, i.e., bending, shear, and tension using a universal testing machine. The criteria for section of jigs for performing tests on joints, based on their shape and stresses acting on a particular joint, were reported. Tests were carried out using all the six type of jigs to check the suitability of jigs and test methods developed in the study. 相似文献
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新型竹编水泥沼气池力学性能的测试与理论研究 总被引：6，自引：1，他引：5
分析了目前在滇南一带开发推广的新型竹编水泥沼气池结构特点，并从实地测试和实验室测试、理论模型的角度，讨论了此类沼气他的结构性能，特别在理论模型研究中，分别针对二维、三维几何模型进行了计算机数值仿真，得到了一些和实地测试一致的结果。实验研究及理论分析说明此类竹编水泥沼气池在力学结构上是合理的，在承受荷载上具有足够大的安全系数，同时也指出了竹编水泥沼气池在实际建造过程中，应该重视的一些技术环节，对于进一步在农村推广应用具有重要的现实意义。 相似文献
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木材无损检测的现状与发展趋势 总被引：1，自引：0，他引：1
概述了无损检测的定义以及木材无损检测的特殊性,重点介绍了多种木材无损检测方法的基本原理、特点及国内外研究现状,并从设备便捷化、成像技术、人工神经网络、联合检测等四个方面阐述了木材无损检测技术的发展趋势。 相似文献
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针对遂昌县三仁乡竹产业的实际,重点开展了竹林高效经营关键技术的试验。实施推广机制和社会化服务机制创新,通过技术参与式设计和技术推广新体系建设,构建自下而上的技术推广新机制;强化政府服务功能和社会化服务体系建设。通过对小忠冬笋高效经营技术的示范与推广,使当地竹农产生了显著的经济效益。 相似文献