通仓浇筑

大体积混凝土通仓浇筑水平约束应力分析

Horizontal Restraint Stress Analysis for Full Length Placement of Mass Concrete Blocks

对三峡工程泄洪坝段混凝土通仓浇筑，建立了模拟混凝土施工过程的整体模型。

An entire model simulating concrete construction process in combination with the concrete pouring without longitudinal , joints of the Three Gorges Project spillway dam is established .

从各块体中部最高温度、最大水平约束应力、断面平均水平约束应力、典型点应力发展过程、正反向应力变幅5个方面，比较系统地阐述了大体积混凝土通仓浇筑问题。

Full length placement of large concrete block is systematically expounded from the max temperature , max horizontal stress , average section stress , stress development process of typical points and maxium variation range of horizontal stress in the middle section of each block .

施工中采用围堰基础分块浇筑、深槽置于覆盖层上、堰体混凝土不分缝通仓连续浇筑等技术措施，有效地保证了碾压混凝土连续快速施工。

The technical measures such as the block placement in the foundation of cofferdam , the deep channel in overburden layer and the continuous full face pouring without joint for cofferdam body concrete were adopted in the construction , so that the continuous quick RCC construction was effectively guaranteed .