Applied Mechanics and Materials Vols. 256-259

Abstract: The structural performance of the PMCRGF subjected to the static loading is actively investigated in this study. The structural properties and of the PMCRGF is briefly introduced at first and the construction process of the PMCRGF is discussed. The field measurement on the structural performance of the PMCRGF is carried out. The arrangement and process of the field measurement is illustrated in detail. The structural deformation and stress distribution are also computed based on finite element approach. The structural fine finite element model is constructed with the aiding of the commercial package ANSYS. The stresses at different section are computed and compared with those obtained from the field testing. The made conclusions from field testing and theoretical analysis can provide beneficial instruction for the real application the plastic mortar culvert reinforced by glass fiber (PMCRGF)

Abstract: Field monitoring datum of a foundation pit are reviewed and analyzed to explain the settlement of adjacent structures. Settlements of adjacent structures induced by the water level fall are calculated through the principle of effective stress in saturated soil and the stratified summation method. The calculated settlement 31.93mm is close to the observed value 28.8mm. This confirms the effective stress increased by the leakage is the main cause of the settlement of adjacent structure.

Abstract: The substructure of Weinan Hongji building in Shanxi Province is frame shear wall structure, supporting a cantilevered steel roof in the shape of an “official hat”. Two different design proposals were compared between pipe truss structure and steel frame. Space truss system was adopted in the middle large span part. Spatial analysis of the overall model was carried out using Midas730 software and 51types of load combinations were considered. The period, mode, strength and stiffness are compared and the result shows that the option 1 outperforms option 2.

Abstract: Distortional buckling which is one of the most important buckling modes for cold-formed lipped channel sections as well as local buckling and global buckling may change mechanical properties and decrease the ultimate load of members. This paper reviews research achievements in distortional buckling, compares the existed design methods according to five national (regional) codes and the latest research achievements. Based on the comparison between five calculating data and test results, it is shown that the design method of North American specification has widespread application and relatively high accuracy, which could supply references for structural design.

Abstract: In order to study the elastic-plastic mechanics properties of the stainless steel reinforced concrete columns under low-cyclic load, the engineering open-source earthquake simulation system OpenSees is used to carry out the numerical simulation. The comparison between the computed results and the pseudo-static test results shows that the OpenSees may stimulate the mechanical properties of the stainless steel reinforced concrete columns by using the fiber element model, both of the skeleton curves and hysteretic curves are well agreement with the tests results.

Abstract: Long-short composite pile is a widely used ground improvement technique. This study presents the results of finite difference analyzes using FLAC3D software to investigate the load-bearing and deformation behavior of long-short pile composite foundation under various load distributions. The pile-soil load-sharing ratio and stress ratio, axial force distribution in the piles, pile side friction resistance distribution, and settlement behavior are also studied. The results show that settlement is much more significantly affected by long-pile rather than short-pile. On the other hand, the load distribution between piles and subsoil is significantly affected by the cushion.

Abstract: Propagation of flexural vibration in a ternary phononic crystal thin plate with a point defect are explored using finite element method. The thin concrete plate is composed of steel cylinders hemmed around by rubber with a square lattice. Absolute band gaps, point defect bands and transmission response curves with low frequency are investigated. Comparing the results of finite element method with that of improved plane wave expansion method, precise identifications are obtained to identify the point defect states. The results show that the finite element method is suitable for the exploring of flexural vibration propagating in ternary phononic crystal thin plates.

Abstract: This paper analyzed the causes of the bolt failure problem of pendulum for different working conditions using the finite element method. The simulation shows that the bolt fracture is due to relaxation caused by bolt slewing bearing and a flange partial slip on .The cause of the failure was the structure design lacking of effective anti-loosing measures. Finally, this paper put forward an effective design scheme to prevent bolts from damage during working process and proposed the specific measures and bolt failure countermeasures.

Abstract: Considering actual steel structures as research background, with emphasis on the effect of initial imperfections, the bending stability of stiffened plates was analyzed by ANSYS finite element. The results show that the moment of stiffening rib are different with the angle changing, and the ability of channel steel is more reinforced than L angles steel. With the thickness of the plate simply supported on four sides decreasing, the influence of imperfection becomes more obvious and the initial imperfection decreases the deflections of the skew plates. Finally through the comparative analysis with monitoring results, the numerically simulated results have a certain reference value.

Abstract: Based on a seven-storey Masonry structure building with bottom framework . This paper states and analysis it’s aseismic design,has been obtain the internal forces and deformation of this structure in the earthquake. Mathematical model built in full accordance with the current design specifications ,The comparison of calculated results with experimental results agree with well . In addition present a sustainable design method to improve the seismic capacity of such structures in earthquake action.Have a certain reference value to the engineering staff.