Research On Compression Performance Of GLC Silicon Light Wallboard

As the demand for residential buildings in my country continues to increase,the assembly rate requirements of residential buildings in various provinces and cities have gradually increased,and prefabricated wall panels have become the focus of the development of prefabricated buildings.Under this background,a variety of wallboard systems have appeared in our country,but the current prefabricated wallboards have problems such as complex production technology,high cost,and cumbersome construction technology.The GLC silicon lightweight wallboard has the characteristics of integral molding,relatively low cost,and convenient installation.It is a kind of prefabricated lightweight wallboard that meets the development needs of the times.In the process of construction,transportation and use,the height-to-thickness ratio of GLC silicon lightweight wallboard will decrease its stability,causing deformation,overturning,breaking and other phenomena.Aiming at the above problems,using experimental research and theoretical analysis methods,the axial compression performance and stability of GLC silicon lightweight wall panels are systematically analyzed.The main research contents include the following aspects:(1)Experimental research on the basic mechanical properties of GLC silicon light-weight wallboard.GLC wallboard is composed of surface layer(special mortar for polypropylene fiber)and core material(silica foamed cement).Its constituent materials are subjected to cubic compressive strength,axial compressive strength,elastic modulus,Poisson’s ratio,etc.test.Provide reliable data support for the follow-up research work of GLC wallboard.(2)Experimental study on axial compression performance of GLC silicon lightweight wallboard.In order to explore the axial compression performance of GLC wallboard and the influence of its height-to-thickness ratio on the wallboard,five groups of GLC wallboard specimens with different height-to-thickness ratios were subjected to full-scale tests under axial load.By studying the failure process and failure modes,the effects of different height-to-thickness ratios on the load-bearing capacity,crack development and initial stiffness of the wall panels are analyzed.The results show that the load-bearing capacity of GLC wall panel specimens decreases nonlinearly with the increase of the height-to-thickness ratio;when the height-to-thickness ratio is greater than At 37.5.the initial stiffness drops sharply,and the bearing capacity and stability of the specimen are also significantly reduced.Based on the above analysis results,the test height-thickness ratio limit is obtained.(3)Finite element simulation analysis of GLC silicon light wallboard.Use ABAQUS finite element simulation software to perform nonlinear buckling analysis on the initial imperfections of GLC wall panels,and obtain the stress cloud diagram,displacement cloud diagram,load-displacement relationship curve,ultimate bearing capacity,etc.of the wall panel model,and compare them with the test results,which are consistent The degree is better,and the error of the ultimate bearing capacity is within 15%;the law of the influence of its height-to-thickness ratio on the mechanical properties of GLC wallboard is more consistent with the law obtained from the experiment,indicating that the finite element model of GLC wallboard has a certain degree of reliability.(4)Theoretical calculation and analysis of the limit value of the height-to-thickness ratio of GLC silicon light-weight wall panels.The theoretical calculation of the height-to-thickness ratio limit is based on the stability theory of the compression rod,and the theoretical height-tothickness ratio limit is obtained.The comparison with the experimental height-to-thickness ratio limit shows that the two are in good agreement,which verifies the high-thickness ratio limit.Reasonability and applicability.The recommended height-to-thickness ratio limit for GLC wall panels is also given.(5)Calculation and research of axial compression bearing capacity of GLC silicon light wallboard.The axial compression formulas of various composite wall panels are compared and analyzed,and a simplified analysis method suitable for GLC wall panels is obtained.Based on this,the contribution of the glass fiber mesh to the stability of the GLC wallboard is included in the stability coefficient,which simplifies the calculation model of its axial compression,and establishes a calculation formula for the axial compression bearing capacity of the GLC wallboard.Comparing the calculation results with the test results,the two are in good agreement,which proves the accuracy of the calculation formula for the axial compression of the GLC wallboard.(6)Application research of GLC silicon light-weight wallboard.According to the analysis of the test results,suggestions for the construction of GLC wall panels in practical engineering applications are put forward,including the end structural measures of GLC wall panels and the super-high and super-long reinforcement construction measures.The research work of this article provides reference for the preparation and application of GLC silicon light-weight wallboard.