Seismic Behavior Research On Self-compacting Lightweight Aggregate Concrete

Self-compacting lightweight aggregate concrete as a new type of material, it hasthe common advantages of self-compacting and lightweight aggregate concrete.Because of light weight, small modulus of elasticity, make its have good seismicperformance. At the same time because the advantages of casted without vibration andused of the industrial waste of material reflects the "environmental protection","sustainable development" concept. In this paper, through experiment and numericalsimulation method on the performance of self-compacting lightweight aggregateconcrete were studied as follows:(1)In this paper, by adopting the method of combination the fixed sand and thevolume calculation, and fixed participation of fly ash and water-binder amount,successfully configured the strength grade of SCLC30self-compacting lightweightaggregate concrete.Through studies on the mechanical properties and the workingperformance of the related to the strength grade of concrete,the experiment resultsaccord with the requirement of relevant specification. Introduced the production ofself-compacting lightweight aggregate concrete frame, the bottom beam fixed, testloading device design, test system and test process of requirements the contents andthe methods of the measurement, etc.(2)One cross self-compacting lightweight aggregate concrete frame aseismicpseudo-static test were completed. Crack propagation, the damage form of structureand the steel reinforcement and the concrete strain gauge reflected the load straincurve of the self-compacting lightweight aggregate concrete frame under the lowcycle loading was studied.(3)By means of analysis the test hysteresis curve of self-compacting lightweightaggregate concrete frame, evaluated the energy dissipation ability, drew out skeletoncurve,obtained the framework features load and displacement.Self-compactinglightweight aggregate concrete frame were studied on the bearing capacity, ductility,energy dissipation, stiffness degradation performance and so on,and a comparison ofsuch behavior was made with that of the ordinary concrete frame from the reference[26].(4)Calculation and analysis has been done for the hysteresis characteristics onthe self-compacting lightweight aggregate concrete frame under low reversed cycliclateral loading via-a grate finite element analysis program,and compared with testresults.Results show that the calculated results are in good agreement with experimentresults, the calculation of framework of energy dissipation and bearing capacity isslightly greater than the measured values.