1 General Provisions
1.0.1 This standard is formulated with a view to ensuring the test quality of concrete structures, studying and correctly evaluating the performance of concrete structures and members, and unifying the test methods of concrete structures.
1.0.2 This standard is applicable to the tests of reinforced concrete structures and prestressed concrete structures of the buildings and general structures, including: laboratory test, test of prefabricated members, field loading test of structures, and tests of structural monitoring and dynamic characteristics. The tests with special requirements, the structural tests under such environment conditions as high temperature, subzero temperature and erosive medium, and other types of tests for concrete structural members shall meet the requirements of the national current relevant standards or the special test requirements.
1.0.3 The tests for concrete structures shall not only comply with the requirements of this standard, but also those of the national current relevant standards.
2 Terms and Symbols
2.1 Terms
2.1.1 Specimen
Object of structural test, a concrete structure or member used for loading and measuring in the test.
2.1.2 Exploratory test
Test for discussing the structural performance and rule for the purpose of scientific research and new technology development (material, process, structural type), etc.
2.1.3 Verifying test
Test for the purpose of verifying scientific research assumption and calculation model and checking the reliability of new technology (material, process, structural type), etc.
2.1.4 Laboratory test
Exploratory test or verifying test for the purpose of simulating the stress state of the structure or member under laboratory conditions.
2.1.5 Test of prefabricated members
Test for the purpose of inspecting the structural performance of prefabricated member products.
2.1.6 Field loading test
Test of loading and measuring on the existing engineering structures on the site.
2.1.7 Structural monitoring
Test of continuous measuring on the structures in construction state or serviceability state.
2.1.8 Test for structural dynamic parameters
Test for dynamic characteristic parameter and dynamic load effect of structures.
2.1.9 Equivalent loading
Loading mode which simulates the actual stress state of the structure or member to make the major internal force of the specimen control section equal or close.
2.1.10 Loading mode
Arrangement form of test load on specimen, including load type, acting position, loading mode, etc.
2.1.11 Critical load value of tests
Load value for controlling each specific stress state of the specimen in the test, including specimen self-weight and loading equipment weight.
2.1.12 Test load value for serviceability limit states
Load value corresponding to the serviceability limit states of the structure in the test, determined through conversion according to the calculated value of internal force of member design control section and the test loading mode.
2.1.13 Design load value for ultimate limited states
Load value, determined through conversion according to the design value of internal force of member design control section and the test loading mode in ultimate limit states.
2.1.14 Coefficient of loading
Multiple of each critical load value of tests corresponding to different load-bearing marks in load-bearing test to the design load value for ultimate limited states.
2.1.15 Test load value for load-bearing capacity
Load value corresponding to the ultimate limit states of the structure in the test, which is the product of the design load value for ultimate limited states, coefficient of loading and significance coefficient of structure for the verifying test.
2.1.16 Additional test load value
Load value actually applied to the specimen after deducting the specimen self-weight and loading equipment weight in the test.
2.1.17 Mark of inspection
Test phenomenon or measuring limit observed when the specimen reaches the determined critical state.
2.1.18 Predicted value of tests
Predicted value of tests for specimen determined through calculation according to the actual index of the material based on the analysis model.
2.1.19 Coefficient of crack-resisting inspection
Ratio of the measured load value for specimen cracking inspection to the test load value for serviceability limit states.
2.1.20 Coefficient of load-bearing inspection
Ratio of the measured load value for specimen load-bearing inspection to the design load value for ultimate limited states.
2.2 Symbols
2.2.1 Performance of materials
——Measured value of elastic modulus of steel bar;
——Measured value of compressive strength of concrete test cube cured under the same conditions as specimen;
and ——Measured value of yield strength and ultimate strength of steel bar;
——Measured value of total elongation (uniform elongation) of steel bar at the maximum force.
2.2.2 Action and action effect
G——Specimen self-weight;
W——Loading equipment weight;
and ——Measured value of cracking load of specimen expressed in uniformly distributed load and concentrated load form;
and ——Calculated value of cracking load of specimen expressed in uniformly distributed load and concentrated load form;
[Qcr] and [Fcr]——Allowable value of cracking load of specimen expressed in uniformly distributed load and concentrated load form;
Qs and Fs——Test load value for serviceability limit states expressed in uniformly distributed load and concentrated load forms;
Qd and Fd——Design load value for ultimate limited states expressed in uniformly distributed load and concentrated load form;
and ——Measured load value of load-bearing test expressed in uniformly distributed load and concentrated load form, when the specimen has Category i load-bearing mark;
and [aS]——Measured value and allowable value of specimen for deflection inspection;
——Calculated value of short-term deflection of specimen determined according to the actually arranged steel bars under the action of test load for serviceability limit states;
and [Wmax]——Measured value and allowable value of maximum crack width under the action of test load for serviceability limit states.
2.2.3 Calculation coefficient and others
ψ——Deflection correction coefficient of simply-supported flexural members at equivalent loading;
and [γcr]——Measured value and allowable value of coefficient of crack-resisting inspection for specimen;
and [γu]i——Measured value and allowable value of coefficient of load-bearing inspection corresponding to Category i load-bearing mark of specimen;
γu,i——Coefficient of loading corresponding to Category i load-bearing mark.
3 Basic Requirements
3.0.1 Before concrete structure test, a test plan shall be established according to the test objective. The test plan should cover the following content:
1 Test objective: test background and objective to be reached;
2 Specimen plan: tested specimen design, selection of specimen in test of prefabricated members, selection of specimen or test area in field loading test of structures and structural monitoring, etc.;
3 Loading plan: supporting and loading mode of specimen, load control method, load grading, loading limit, load holding time, unloading procedure, etc. For structural monitoring, the load action mode shall be determined according to the actual engineering conditions;
4 Measuring plan: the measuring items required by test, measuring point arrangement, instrument selection, installation mode, measuring precision, measuring range rechecking, etc. shall be determined;
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Basic Requirements
4 Performance of Materials
5 Test Loading
5.1 Supporting Equipments
5.2 Loading Mode
5.3 Loading Procedure
6 Test Measuring
6.1 General Requirements
6.2 Measuring of Force Value
6.3 Measuring of Displacement and Deformation
6.4 Measuring of Strain
6.5 Measuring of Crack
6.6 Error and Statistical Analysis of Test Results
7 Laboratory Test
7.1 General Requirements
7.2 Test Plan
7.3 Test Process and Results
8 Test of Prefabricated Members
8.1 General Requirements
8.2 Test Plan
8.3 Test Process and Results
9 Field Loading Test of Structures
9.1 General Requirements
9.2 Test Plan
9.3 Inspection Indexes
9.4 Judging by Test Results
10 Monitoring and Dynamic Tests for Structures
10.1 General Requirements
10.2 Monitoring in Construction State
10.3 Monitoring in Serviceability State
10.4 Tests of Structural Dynamic Characteristics
11 Safety of Test
Appendix A Record Table for Structural Performance Test of Prefabricated Members
Appendix B Instruments and Transducers for Structural Monitoring
Explanation of Wording in This Code
List of Quoted Standards
