摘要
目前工程设计正处于新老规范交替及行业之间不同步阶段,各行业使用不同的荷载设计规范,各专业规范对影响结构可靠度的荷载效应和结构抗力等参数进行统计分析方法也不同.水利行业的工程基础设计仍采用容许承载力设计法,依据荷载基本、特殊组合效应和地基容许承载力确定基础底面积和埋深.目前水利行业尚未颁布与《水利水电工程结构可靠度设计统一标准》(GB50199—94)相配套的行业设计荷载规范,为此目前水利工程基础设计应遵循本行业规范的荷载和材料强度取值统计方法、荷载组合效应及地基承载力不同取值的对应关系,且不能混用,确保工程安全可靠、经济适用.
Engineering design has nowadays undergone an alternative stage of new and old specifications and an out-of-step result from different professions in terms of design codes and standards. Specifications and codes for load design applied are dissimilar by different professions, which lead to the methods defined by them for statistics and analysis of some parameters unlike, such as load effect and structural resistance that may influence reliability of the structure under design. Nevertheless foundation design in water resources still apply a design method of allowable bearing capacity, i.e. foundation base area and depth to be determined against basic and special load effect combination and subgrade bearing capacity. Up to now no specifications that are associated with 'Unified Design Standard for Reliability of Hydraulic Engineering Structures' (GB50199—94) and relevant to design and load have been published. Therefore it is necessary for engineering design of foundation in water projects to observe statistics method of load and material strength values, load effect combination and corresponding relationship of different values taken for subgrade bearing capacity as stipulated in specification exclusively issued for water projects. For the purpose of building a safe, economical and applicable project, methods defined in specifications of different professions are prohibited to incorporate.
出处
《水利水电技术》
CSCD
北大核心
2004年第10期4-6,共3页
Water Resources and Hydropower Engineering
关键词
可靠度
荷载效应组合
容许承载力
承载力设计值
承载力特征值
degree of reliability
load effect combination
allowable subgrade bearing capacity
designed value of subgrade bearing capacity
characteristic value of subgrade bearing capacity
