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(二)现浇钢筋混凝土地下及半地下长条形结构物的温度收缩应力、伸缩缝间距(即裂缝间距)和裂缝宽度从前述有关地基上长条板温度收缩应力的基本公式推导,可扩充到一般地下及半地下长条形结构物的温度收缩应力、伸缩缝间距(裂缝间距)以及裂缝宽度的计算方法方面去。为此,有必要重引上节两个基本公式并扩充到其它结构物。 1.地基上长条板(见图59)在均匀温
(ii) The temperature shrinkage stress, the distance between the expansion joints (that is, the crack spacing) and the crack width of the in-situ cast-in-place reinforced concrete underground and semi-underground long strip structures are deduced from the aforementioned basic equations for the temperature-shrinkage stress of the long slabs on the relevant foundation, and are extensible. The temperature shrinkage stress, the distance between expansion joints (crack gap), and the calculation method of the crack width to general underground and semi-underground long strip structures. For this reason, it is necessary to reintroduce the two basic formulas in the previous section and extend them to other structures. 1. Long slabs on the foundation (see Figure 59) at uniform temperature