预应力后张法简支箱梁温度控制要点  

Key points of temperature control ofprestressed post tensioned simply supported box girder

作　　者：赵煜 ZHAO Yu(Anhui University of Science and Technology,Huainan 232000,China)

机构地区：[1]安徽理工大学,安徽淮南232000

出　　处：《四川建材》2021年第7期116-116,135,共2页Sichuan Building Materials

摘　　要：随着我国高速铁路的迅速发展,由于温度应力的影响而造成箱梁出现裂纹病害的例子越来越多。为此,近年来,行业标准中对大体积混凝土浇筑后养护工作的要求也越来越严格。本文根据现场实际施工需要,对自动喷淋养护技术和自动测温技术的施工控制要点进行了介绍,通过自动控制代替原先的人为控制。以此来严控施工过程,确保箱梁质量。With the rapid development of high-speed railway in China,more and more cases of box girder cracking due to the influence of temperature stress are occurring.For this reason,in recent years,the requirements for the post-casting maintenance of mass concrete in the industry standards have become more and more stringent.According to the actual construction needs,this paper introduces the construction control points of automatic spray maintenance technology and automatic temperature measurement technology,and replaces the original artificial control by automatic control.In order to strictly control the construction process,to ensure the quality of box girder.

关 键 词：混凝土 预应力 预制箱梁 测温 

分 类 号：U445.57[建筑科学—桥梁与隧道工程]