在高层建筑的基础工程中采用体积较大的整体钢筋砼箱形或筏板基础已成为普遍的结构形式。这种现浇钢筋砼结构的截面尺寸往往较大，因此，由荷载引起裂缝的可能性极小。但是由于大体积砼硬化期间水泥水化过程释放的水化热所产生的温度变化和砼收缩的共同作用，由此产生的温度应 The use of bulky reinforced concrete box or raft foundations in the foundation projects of high-rise buildings has become a common structural form. The cast-in-situ reinforced concrete structure tends to have a large section size, and therefore, the possibility of cracks caused by the load is extremely small. However, due to the combined effect of the temperature change and the crucible shrinkage caused by the heat of hydration released during cement hardening during the hardening of large volume concrete, the resulting temperature should be