National Standard of the People's Republic of China
GB/T 50344—2004
Technical standard for inspection of building structure2004--09-02Issued
2004-12-—01
Ministry of Construction of the People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
Jointly issued
National Standard of the People's Republic of China
Technical standard for inspection of building structureGB/T 50344 — 2004
Editing department: Ministry of Construction of the People's Republic of ChinaApproving department: Ministry of Construction of the People's Republic of ChinaEffective date: December 1, 2004
China Building Industry Press
2004Beijing
National Standard of the People's Republic of China
Technical standard for inspection of building structure of building structureGB/T 503442004
Published and distributed by China Architecture & Building Press (Baiwan Village, western suburbs of Beijing)Distributed by Xinhua Bookstore
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Format: 850×1168mm1/32Printing sheet: 4Number of words: 100,000 wordsFirst edition in November 2004
Second printing in November 2004
Unified book number: 15112·12785
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No. 265
Announcement of the Ministry of Construction on the Issuance of the National Standard
"Technical Standard for Building Structure Inspection"The "Technical Standard for Building Structure Inspection" is now approved as a national standard, numbered GB/T 50344-2004, and will be implemented from December 1, 2004. This standard is organized by the Standard and Norms Research Institute of the Ministry of Construction and published by China Building Industry Press.
Ministry of Construction of the People's Republic of China
September 2, 2004
According to the requirements of the Ministry of Construction's Construction Standard [2002] No. 59 document, the China Academy of Building Research, together with relevant research and testing units, jointly compiled the "Technical Standard for Building Structure Testing" GB/T50344.
During the compilation process, the compilation team carried out special research, experimental research and extensive investigation and research, summarized the experience and lessons of my country's building structure testing work, referred to and adopted the advanced experience of international building structure testing, and widely solicited opinions from relevant design, scientific research, teaching, construction and other units across the country. After repeated discussions, revisions and enrichments, it was finally finalized after review. In terms of building structure engineering quality testing, this standard is consistent with the newly revised It is coordinated with the "Uniform Standard for Construction Quality Acceptance of Building Engineering" GB50300 and related structural engineering construction quality acceptance specifications: In terms of the inspection of existing building structures, it is coordinated with relevant reliability appraisal standards. This standard has 8 chapters and 9 appendices, which stipulate the situations corresponding to the inspection of building structure engineering quality and building structure performance, the basic procedures and requirements for building structure inspection, the inspection items and methods used for building structures, and proposes sampling plans suitable for building structure inspection items and evaluation criteria for sampling inspection results. At the same time, this standard proposes requirements for normal inspection and routine inspection of existing buildings. This standard may need to be partially revised in the future. The information and provisions of the partial revisions will be published in the "Engineering Construction Standardization" magazine. This standard The Ministry of Construction is responsible for the management, and the China Academy of Building Research is responsible for the specific content interpretation. In order to improve the quality and level of the compilation of the "Technical Standard for Building Structure Testing", please pay attention to summarizing experience and accumulating information in the process of implementing this standard, and send your opinions and suggestions to: No. 30 North Third Ring Road East, Beijing, National Standard "Technical Standard for Building Structure Testing" Management Group of the National Construction Engineering Quality Supervision and Inspection Center of the China Academy of Building Research (Postal Code: 100013; E-mail:
[email protected]). The editor of this standard: China Academy of Building Research 5
Participating units: Sichuan Academy of Building Research Metallurgical Department Architectural Research Institute
Hebei Academy of Building Research
Shanghai Academy of Building Research
Beijing Construction Engineering Quality Inspection Center
Shaanxi Academy of Architectural Science
Shandong Academy of Architectural Science
Heilongjiang Cold Region Architectural Science Research Institute
Jiangsu Academy of Architectural Science
Xi'an Jiaotong University
National Construction Engineering Quality Supervision and Inspection Center Main drafters: He Xinghua, Di Xiaotan, Gao Xiaowang (the following are arranged according to the number of strokes of the surname) Wang Yongwei
Ma Jianxun, Zhu Bin, Guan Shujun
Li Naiping,
Yang Jianping, Zhou Yan, Zhang Yuanfa
Zhang Yuanbo
Bao Deli
Hou Ruxin, Yuan Haijun
Zhang Guotang
Gu Ruinan
Lu Yanxing
Cui Shiqi
2 Terminology and symbols
2.1 Terminology·
2.2 Symbols
3 Basic provisions
Subject list
Scope and classification of building structure inspection
Inspection procedures and basic requirements
Inspection methods and sampling plans
Inspection of existing buildings
Inspection report
Inspection units and inspectors
Concrete structure·
General provisions·
Raw material properties·
Concrete strength
Appearance quality and defects of concrete components
Dimensions and deviations·
Variation Deformation and damage·
Arrangement and corrosion of steel bars
Real-load test of component performance and dynamic measurement of structure
5 Masonry structure
General provisions
Masonry blocks··
Masonry mortar·
Masonry strength·
5.5 Masonry quality and structure
5.6 Deformation and damage
6 Steel structure
General provisions·
Dimensions and deviations
Defects, damage and deformation
Steel grid
Real-load test of structural performance and dynamic measurement·
Concrete-filled steel tube structure
General provisions
Raw materials
Welding quality of steel pipes and component connections
Strength and defects of concrete in steel pipes·
Dimensions and deviations
8 Timber structures·
General provisions·
Wood properties
bZxz.netWood defects
Dimensions and deviations
Deformation, damage and protective measures
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Detection method for frostbite of structural concrete
Detection of the influence of f-CaO on concrete quality
Concrete Determination of chloride ion content
Detection of steel corrosion in concrete
Structural dynamic test methods and requirements
Appendix F Rebound test of sintered ordinary brick compressive strengthAppendix G Surface hardness method to infer steel strength
Appendix H Static load test of steel structure performanceAppendix J Ultrasonic method to test the compressive strength of concrete in steel pipesExplanation of terms and phrases used in this standard
Explanation of clauses
1 General principles
1.0.1 This standard is formulated to unify the evaluation methods of building structure detection and detection results, make them advanced in technology, reliable in data, improve the comparability of detection results, and ensure the reliability of detection results.
1.0.2 This standard is applicable to the detection of the quality of various structural engineering projects in construction projects and the detection of the performance of existing building structures.
1.0.3 Ancient buildings and structures or components affected by special corrosion can be detected in accordance with the basic principles promoted by this standard.
1.0.4 In addition to complying with the provisions of this standard, the inspection of building structures shall also comply with the provisions of the relevant national mandatory standards in force. 1.0.5 For buildings that do not comply with the basic construction procedures, the inspection shall be carried out only after the approval of the construction administrative department.
Inspection of building structure
2 Terms and symbols
Inspection of building structure Inspection work carried out to assess the quality of building structure engineering or to identify the performance of existing building structures.
2 Inspection lot
Inspection object consisting of a certain number of components with the same inspection items, basically the same quality requirements and production processes.
3 Sampling inspection
Sampling inspection
Inspection method of taking samples from the inspection lot and determining the quality of the inspection lot by testing the samples.
4 Testing zone
Testing zone
An area arranged according to the requirements of the inspection method with one or more measuring points. 5 Testing point testing point
The testing point within the testing area where the test data is obtained 2.1.2 Testing methods for strength and defects of structural components 1 Non-destructive testing method method of non-destructive test Testing method that has no effect on the existing performance of the structure during the testing process. 2 Part-destructive testing method method of part-destructive test Testing method that has a local and temporary impact on the existing performance of the structure during the testing process, but is repairable.
3 Rebound method rebound method
A method for testing the compressive strength and strength homogeneity of materials by measuring the rebound value and related parameters.
Ultrasonic-rebound combined method ultrasonic-rebound combined method
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