ISO 5091-3:2023 使用水泥基材料的现有混凝土结构的结构性干预 第3部分：底面（拱腹）垫层

标准编号：ISO 5091-3:2023

中文名称：使用水泥基材料的现有混凝土结构的结构性干预 第3部分：底面（拱腹）垫层

英文名称：Structural intervention of existing concrete structures using cementitious materials — Part 3: Bottom-surface (soffit) underlaying

发布日期：2023-07

标准范围

本文件规定了采用底面（拱腹）下垫法设计和施工的标准。底面（拱腹）垫层是一种将加固材料放置在性能低于要求的板或梁的底面上，通过加固材料与现有构件之间的完整性来实现构件的耐久性、适用性、安全性和其他性能的提高的方法。本文件规定了使用胶凝材料对现有混凝土结构进行结构干预的设计和执行原则，以及缺陷和持续恶化的策略，包括但不限于:A）？机械作用，例如疲劳、冲击、过载、沉降引起的移动、爆炸、振动和地震作用；b）？来自环境的化学和生物作用，例如硫酸盐侵蚀、碱-骨料反应；c）？物理作用，例如冻融、热裂解、水分移动、盐结晶、火灾和侵蚀；d）？钢筋腐蚀；e）？从施工时起仍未解决的原始施工缺陷。

This document specifies the standards for design and construction using the bottom-surface (soffit) underlaying method. Bottom-surface (soffit) underlaying is a method whereby reinforcing materials are placed on the bottom surface of the slabs or beams whose performance is lower than required and the improvement of durability, serviceability, safety and other performance of the members is achieved by the integrity between the reinforcing materials and existing members.

This document specifies structural intervention of existing concrete structures using cementitious materials design and execution principles, and strategies for defects and on-going deterioration including, but not limited to:

a)       mechanical actions, e.g. fatigue, impact, overloading, movement caused by settlement, blast, vibration, and seismic actions;

b)       chemical and biological actions from environments, e.g. sulfate attack, alkali-aggregate reaction;

c)        physical actions, e.g. freeze–thaw, thermal cracking, moisture movement, salt crystallization, fire, and erosion;

d)       reinforcement corrosion;

e)       original construction defects that remained unaddressed from the time of construction.

标准预览图