一、前言在某些大型混凝结构物中,特别在箱形混凝土结构物中,温度应力计算值可比其它所有荷载共同产生值还大,一并往往导致混凝土结构物产生不安全,不美观的裂纹。故此问题已成为大型混凝土结构物设计的关键技术之一,日益受到国内外专家们的一致关注。 I. INTRODUCTION In some large concrete structures, especially in box-shaped concrete structures, the calculated value of thermal stress may be larger than all other loads together, which often leads to the unsafe and unsightly appearance of concrete structures crack. Therefore, the problem has become one of the key technologies in the design of large-scale concrete structures, and has been receiving more and more attention from domestic and foreign experts.