Applied Mechanics and Materials Vols. 351-352

Abstract: To optimize the design of RC frames with special-shaped columns, some special care should be given to the design of this type of structure. Designers should attach great importance to concept design by considering the structure as a whole to assimilate seismic energy. Ductility has to be guaranteed both for the structure and for the members. In high-rise buildings, frame-shear wall structure is preferred. Safety of L-shaped Corner columns is to be improved or otherwise cantilever beams can be designed to prevent progressive collapse.

Abstract: The jack-up wind turbine installation vessel is a special kind of vessel for building the offshore wind power farm. The main crane pedestal, which is the supporting structure of the crane on the main deck of the vessel, is always under high level loads when the ship is in operation condition. In this paper, the structural strength analysis of main crane pedestal of the jack-up wind turbine installation vessel was presented. The direct calculated method was used to evaluate the strength of the main crane pedestal. The FE model of main crane pedestal was established with refined mesh, and the adjoining hull structure was also modeled to provide accurate boundary condition. Considering the permanent loads, variable loads (crane loads) and wind loads on the pedestal, the load combinations were defined for the ultimate limit state for every 45 degree. The deformation and stress of the pedestal and the hull structures were calculated and checked. The results showed that all stress results were within the maximum allowable stresses. The critical areas are often located at the link region of hull and pedestal.

Abstract: High-accuracy solution of the problem of plate analysis is normally required in some pre-known domains (regions with the risk of significant stresses that could potentially lead to the destruction of structure, regions which are subject to specific operational requirements). The distinctive paper is devoted to correct wavelet-based multilevel discrete-continual finite element method for local analysis of plates with regular (in particular, constant or piecewise constant) physical and geometrical parameters (properties) in one direction. Initial discrete-continual operational formulation of the considering problem and corresponding operational formulation with the use of wavelet basis are presented. Due to special algorithms of averaging within multigrid approach, reduction of the problem is provided. Resultant multipoint boundary problem of structural mechanics for system of ordinary differential equations with piecewise-constant coefficients is given.

Abstract: Aiming at the actual condition that non uniform pressure act on shaft linging, adopting finite element numerical simulation method, mechanical characteristic of two-layer steel plate concrete shaft lining is researched. Based on pertinent regulations of concrete strength improving coefficient in the state of triaxiality stress, designed twolayer steel plate concrete shaft lining meet strength need under non uniform pressure. The research findings can provide referrence for similar structure design.

Abstract: The test and theoretical analysis of full-scale cable membrane structure are less, and the author carried out simulation analysis of full scale cable-membrane structure with 30m by ANSYS software, finite element realistically model of cable membrane structure was established based on the assumption. By applying the temperature loads form-finding of membrane is achieved. By self-equilibrium nonlinear solution, the deformation and the stress distribution of this structure are gotten, finally construction methods of the node and the supporting members are given. These can provide the theory support for improving the spatial structure, and can provide reference for design and construction of similar engineering.

Abstract: With the characteristics of fast growth and short renewable cycle, as well as the superiority in mechanical properties such as high strength and high stiffness, the application bamboo essence in construction industry will promote the green sustainable development of this industry. This paper introduces the structure and mechanical properties of bamboo briefly, with the composition, modeling features and special of composite bamboo buildings described and analyzed, and the current study examples presented, which provides ideas and references for future development of the modern bamboo structure buildings.

Abstract: Simulation analysis on prestressed concrete pipe was carried out by using finite element software ANSYS. The internal and external pressure which the pipeline is subject to is simulated in real work process, and deformation and stress distribution of building pipeline structure are got. We have great understanding in the mechanical properties, at the same time give a detailed introduction for the prefabrication and on-site construction process. Three aspects in this paper for analysis, design and construction can provide safe and reliable reference for design and construction of similar pipeline structure.

Abstract: A series of wind tunnel aerodynamic experiments were conducted to investigate the wind loads on the low-rise buildings located around the hillside. The result shown, the steep roof slope may cause a separation bubble at the edge and the small separation shear layer reattached the roof just near the edge due to the steep slope of roof at the uphill side. At the downhill side, the mean pressures of the building with gently slope roof to be positive for most of them. The building seems to be covered by the hill separation bubble, and the approaching flow with negative inclination acting on the buildings. The surface pressures of low-rise buildings may not reflect the local shear layer behaviors, but they shown the acting results of the wake of the hill. The fluctuating pressures distribution at low-rise buildings located at hillside would slightly less than the ones without hill.

Abstract: This paper has carried out mechanics analysis of plane structure made of steel tube columns and the steel truss girder. Inner force analysis of steel tube column is gotten under vertical and horizontal load by adopting the theoretical calculation method. Using ANSYS software static and modal analysis of the truss girder is performed, and three order natural frequencies and vibration mode are obtained. It is verified for the rationality of the structure. At last the construction of node is given. The structure system has the advantages of simple construction and short cycle, so it can provide valuable reference for similar engineering.