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Structure design of practical engineering often involved in lots of uncertain problems, such as program superiority options, the selected works between the same problems and different specifications, etc. This article made the related discussion and analysis on a number of issues.1、Currently involved in the relevant norms of rock-socketed piles have several books, but the specific calculations and design methods for single pile bearing capacity are not the same, calculation for characteristic value of vertical bearing capacity vary greatly. In this paper, using ANSYS FEM program analyzed vertical rock-socketed pile bearing capacity and verified that Technical code for building pile foundations (JGJ 94-2008) is more reasonable for this kind of calculation. In addition, under the current structure design method, pile and pier foundation bearing capacity varied widely. In this article.aimed to the length 3m,4.5m,6m,10m of rock-socketed piles, ANSYS FEM program made the finite element model and computational analysis, and proposed that length 3-6m of rock-socketed piles can apply the calculation method of pile foundation, without counting soil lateral friction, and also the total resistance which embedded in rock can be reduced 0.7-0.9. If the pier length<3 meters, it can be considered to calculate the bearing capacity of shallow foundation.2、Example of the most common column grid size, calculate and design underground garage roof according to five kind of structure program. Through comparison and analysis with building usability, economic benefits and reasonable force, the best program of this roof design is the program 1. In addition, directed at a variety of common board cross and overburden depth, calculate the equivalent live load and fire engine channels by the code requirements,and also produced a form,which can provide convenience for future structural design.3、In this paper, SAP program is used to analyze super-long structure function effects of seasonal temperature,investigate difference of the thermal deformation and thermal stress under seasonal temperature load, and calculate the reinforced concrete frame structure changes as the length, floor thickness, beam line of the role of stiffness change on the temperature effect. According to the analysis results, proposed the measures to control the temperature deformation and thermal stress of reinforced concrete frame structure.4、In fractical engineering,the designers often neglect the calculation of reinforced concrete beams with opening hole, also the software fail to provide this calculation. For this problem, this paper used C++programming language to develop beams capacity calculation software, which can be used to calculate the loading capacity of reinforced concrete beams. According to the analysis of the results,the proposal of the calculation are given on a number of manuals and norms did not involved.
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