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各位说说伸缩缝设计要求有哪些？哪位知道？

各位说说伸缩缝设计要求有哪些？哪位知道？

浏览：28次 | 提问时间： 07-22 11:42

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6个答案

平淡温度 07-22 11:43

10×106,干燥收缩度20×105,徐变系数ψ

超过了恐惧 07-22 11:51

对接式伸缩装置:
填塞对接型---以沥青、木板、麻絮、橡胶等材料填塞缝隙，用于伸缩量在40mm以下桥梁;
嵌固对接型---利用不同形状的钢构件将不同形状的橡胶条(带)嵌牢固定，并以橡胶条(带)的拉压变形来吸收梁体的变形，应用于伸缩量在80mm及其以下的桥梁。
钢制支承式伸缩缝:
用钢材装配制成的，能直接承受车轮的荷载;
能满足大位移要求，但很难做到密封不透水，而且容易造成对车辆的冲击，影响车辆的行驶性。
组合剪切式橡胶伸缩缝:
利用橡胶材料剪切模量低的原理设计制造而成的;
伸缩量大，行车平稳，但一般伸缩摩阻力比较大。
模数支承式伸缩缝:
利用吸震缓冲性能好又容易做到密封的橡胶材料，与强度高刚性好的异型钢材组合的，在大位移量情况下能承受车辆荷载。
无缝式伸缩装置:
接缝构造不伸出桥面时，在桥梁端部的伸缩间隙中填入弹性材料并铺上防水材料，然后在桥面铺装层铺筑粘弹性复合材料，以连接缝的沥青混凝土等材料的变形承受伸缩;
仅适用于较小的接缝部位，适用范围有所限制。