一、前言在大体积混凝土工程中,温度应力往往在结构应力中占很大比例,甚至超过其他荷载的应力。船坞坞墙和水闸闸墙往往因温度应力而开裂,故对此类工程的温度应力研究具有重要意义。自1964年以来,交通部有关单位先后对文冲、红星、山海关等船坞进行了原体观测,取得了一些实测结果。为进一步掌握温度应力及裂缝产生的规律,正确 I. Introduction In large-volume concrete projects, thermal stress often accounts for a large proportion of structural stress, and even exceeds the stress of other loads. Dock dock wall and sluice gate wall often cracking due to temperature stress, so the temperature stress of such projects is of great significance. Since 1964, relevant departments of the Ministry of Communications have carried out original body observations on the docks of Wenchong, Hongxing and Shanhaiguan and have made some actual measurements. In order to further understand the rules of temperature stress and cracks, correct