The Different Filled Material Ecological Composite Wall Structure Seismic Response Analysis

As a new residential structure system with the advantages of eco-friendly，energy-efficient and aseismatic，convenient installation，economical and practical，theecological composite-wall structure is a continuation of the multi-ribbed composite wallstructure. The filling material can be made the best of the principle of selection inaccordance with the requirements of the local ecological material and the localconditions. The research and application of the suitability ecological composite wallstructure applicable to different regions will have an important role on acceleratingconstruction of technological progress and industrial upgrading. Based on the previousresearch and with the features the combination of new material and new structuresystem，this paper using the closely integrated of the theoretical analysis, numericalsimulation and analytical calculation as a research tool. Using the SAP2000to do thesimulation of the rigid frame-composite materials equivalent elastic plate. Thecomparative analysis of the elastic stage seismic response of the ecologicalcomposite-wall structure with different filling materials is conducted. The main researchcontents and results are as follows:(1) Made a detailed overview of five ecological materials and addressed their mainpreparation process， the force failure characteristics， the uniaxial constitutivecompressive mechanical model and the advantages and disadvantages specifically. Theyield criterion and its multiaxial elastoplastic constitutive relation of five kinds ofeco-filled block is conducted and the hardening function is derived. Finally, based onthe unified strength theory, by using the pre-prepared ABAQUS subroutine UMAT， made the nonlinear numerical comparative analysis of composite wall with differentfilling ecological materials and draw the P-delta curve.(2) Using SAP2000to simulate the rigid frame-composite materials equivalentelastic plate of ecological composite-wall structure and the dynamic response analysisin elastic stage of a1/10ratio,10-layer shaking table test model is proceed. Thedynamic characteristics of the vibration cycle and formation function of ecologicalcomposite-wall structure are deduced, and the test results and numerical solution arecompared with it. The results show that, the mechanical model can be used to simulateecological composite wall structure. The analytical formula of the calculated andexperimental values are in good agreement，which indicating that the formula can beused for ecological composite wall structure calculation.(3) Using validated finite element model to analysis and study a completed projectexample， the comparative analysis of ecological composite-wall structures withdifferent filling materials under the action of elastic seismic response displacement，acceleration of performance indicators are conducted. The analysis results show that:under three types of seismic waves, five different filled material floor overall lateraldisplacement trend is consistent; Filled with straw bale, the lateral displacement of thestructure is maximum;Filled with aerated block, under the action of the TAFT wavetop-level acceleration is maximum; Ratio of three time-history curve calculatedstructure substrate reaction force and the modal response spectrum method to calculatethe resultant structure substrate reaction force not less than0.8. Backfilling of thedifferent materials have a greater impact on the overall structure, but can meet currentseismic code requirements, and can be used as the theoretical basis for seismic designunder small earthquakes.