Freezing Damage Analysis of Jintaizi Fishing Floor Engineering in Fuyu

2014 ◽  
Vol 580-583 ◽  
pp. 2579-2582
Author(s):  
Li Jun Dou ◽  
Wei Wang ◽  
Ming Yu Xu
Keyword(s):  
Frame Structure ◽  
Damage Analysis ◽  
Light Weight ◽  
Freezing Damage ◽  
Structure Form ◽  
Structure Building ◽  
Joint Structure ◽  
Weight Saving ◽  
Pressure Calculation ◽  
Ice Pressure

Frame structure building is widely used for its advantages of flexible space, light weight, saving material, building plan can be flexibly arranged and so on. However, researches on frame structure built in the water in cold areas, under horizontal ice pressure, are very few, and there is also no ice pressure calculation method for this structure form. Combining with the damage phenomenon of Jintaizi fishing floor engineering, analyzed the causes of freezing damage from ice pressure, temperature joint, structure form, and put forward a concept of ice pressure influence width for frame structure under the effect of ice. This article provides a reference for ice pressure calculation and the design of frame structure buildings which built in the water.

Analysis of the Effect of Super-Structure’s Stiffness on Foundation’s Uneven Settlement

2011 ◽  
Vol 374-377 ◽  
pp. 1690-1693
Author(s):  
Da Chuan Chen ◽  
Ri Xin Liu ◽  
Deng Ke Li
Keyword(s):  
Composite Structure ◽  
Masonry Structure ◽  
Frame Structure ◽  
Practical Significance ◽  
Rc Frame ◽  
Structure Building ◽  
Theoretical Support ◽  
The Poor ◽  
Bottom Frame

The bottom-frame structure is a kind of small bay masonry structure building with large bay RC frame in bottom[1], it is widely exists near streets in China because of the economy and applicability. But for the poor correspondence capacity for foundation’s deformation, it is easily be damaged for this kind of building in uneven settlement. It can provides theoretical support for design and strengthening works of such kind of structure buildings by analyzing the relation between superstructure’s stiffness and settlement of foundations, which has practical significance. For the complexity of stress of the composite structure, ANSYS is used in this analysis. A strengthening project based on this theory is introduced in the end, it validates the feasibility of the conclusion.

Study of the Influence of the Beam-Column Line Stiffness Ratio on the Frame Structure Load Capacity Based on MATLAB

2011 ◽  
Vol 71-78 ◽  
pp. 4194-4198
Author(s):  
Shao Qin Zhang ◽  
Hua Hu Cheng
Keyword(s):  
Engineering Design ◽  
Carrying Capacity ◽  
Calculated Result ◽  
Load Capacity ◽  
Frame Structure ◽  
Stiffness Ratio ◽  
Displacement Method ◽  
Structure Form ◽  
The Matrix ◽  
Internal Forces

Statically indeterminate frame, composed of beams and columns, is a widely used structure form in civil engineering. The frame carrying capacity under various actions is related to the absolute stiffness of frame components and relative beam-column line stiffness ratio. The matrix displacement method and programming based on MATLAB were employed in this study to calculate the internal forces and displacements of a 2-bay 2-story frame structure under the action of horizontal loads. The influence of the beam-column line stiffness ratio on the frame load capacity was discussed based on the calculated result. Furthermore some advises were provided about the reasonable beam-column line stiffness ratio for engineering design.

Seismic Damage Analysis and the Study of Reinforcement Measures for RC Frame Structure Building in Civil Engineering

2012 ◽  
Vol 568 ◽  
pp. 85-88
Author(s):  
Ming Gao
Keyword(s):  
Structural Damage ◽  
Civil Engineering ◽  
Seismic Damage ◽  
Frame Structure ◽  
Bottom Plate ◽  
Rc Frame ◽  
Structure Building ◽  
Damage Degree ◽  
Rc Frame Structure ◽  
Reinforcement Measures

In 5·12 Wenchuan earthquake, most of the buildings were damaged at different degrees in Mianyang. To analysis seismic damage of RC frame structure building, and investigate its reinforcement situation，the results show that: For destruction of frame column or bottom frame structure column, enlarge section method is used mostly for reinforcement in civil engineering；To serious damage of affiliated structure such as filler wall and Parapet, most of them will be demolished and built again, and add constructional column; To the situation of concrete bottom plate with crack, paste carbon fiber sheet or bottom plant steel was used depending on the structural damage degree, and jet concrete for strengthening.

Design and Research on Aluminum-Plastic Trunk Lid

2012 ◽  
Vol 538-541 ◽  
pp. 833-840
Author(s):  
Duo Nian Yu ◽  
Li Yang Gu ◽  
Chong Yang Lu
Keyword(s):  
Design Method ◽  
The Body ◽  
Frame Structure ◽  
Light Weight ◽  
Mechanical Stiffness ◽  
Plastic Structure ◽  
Stiffness Properties ◽  
Body Design ◽  
Static Mechanical ◽  
Panel Thickness

Abstract: In this paper, the traditional trunk lid was analyzed using finite element method firstly, and then the basic mechanical properties of the lid were obtained, which were used as the topology optimization constrains of the trunk lid outer panel, then the aluminum alloy frame structure that could satisfy the static mechanical stiffness properties was designed; According to the requirement, the trunk lid inner panel was redesigned, the material properties determined in advance were given to the inner and outer panel respectively, after being assembled, the best panel thickness could be obtained by ways of size optimization. Compared to the analysis results, the new aluminum-plastic structure can meet the requirements in performance, and has significant effect on light-weight. This paper provides some reference for the development of the aluminum-plastic structure of the body design method.

Research on the Effect of Freezing of Pumped Storage Power Station Upper Reservoir’ Bank in Cold Regions

2015 ◽  
Vol 744-746 ◽  
pp. 1120-1123
Author(s):  
Dong He Ma ◽  
Yan Ping Li ◽  
Yan Bin Xu ◽  
Zhong Fu Liu ◽  
Shuang Xu ◽  
...  
Keyword(s):  
Pressure Gauge ◽  
Prevention Measures ◽  
Freezing Damage ◽  
Water Level Change ◽  
Power Station ◽  
Cold Zone ◽  
Level Change ◽  
Large Scope ◽  
Pumped Storage ◽  
Ice Pressure

This Water level change of upper storage reservoir of pumped storage power station is frequent and big. The change leads to freezing damage on and adverse impact on bank stability of reservoir in cold zone. For above problems, combining with the running project, using dynamic ice condition image shooting system, vibrating ice pressure gauge , the characters on reservoir bank destroyed by coldness and action rules of ice pressure on bank slope were studied in depth. The scientific prevention measures were proposed. The monitoring period of maximum observed ice pressure is 21kPa, the magnitude of ice pressure on the hydraulic structures without causing a significant threat. Because of the action of buoyancy, the bank around the dry stone pitching occurred in a large scope to armour stone are pulled out as the main form of failure. The research results will have significance on freezing damage prevention scheme formulation of reservoir bank of pumped storage power station in cold zone.

Light Weight Optimization Design for a Connection Frame Considering Thermal-Structural Coupling Deformation

2014 ◽  
Author(s):  
Lufan Zhang ◽  
Zhili Long ◽  
Jiandong Cai ◽  
Jiwen Fang
Keyword(s):  
Working Conditions ◽  
Optimal Solution ◽  
Frame Structure ◽  
Light Weight ◽  
Precision Positioning ◽  
Structural Coupling ◽  
Maximum Deformation ◽  
High Acceleration ◽  
Ultra Precision ◽  
Coupling Deformation

Connection frame, as a key module in macro-micro motion platform, is employed to realize a high acceleration, high speed and ultra-precision positioning motion. In the paper, six working conditions of connection frame are obtained by analyzing its driving processes. The maximum deformation in the different working conditions is calculated by the mechanical analysis which affects ultra-precision positioning. Moreover, the maximum deformation of thermal-structural coupling analysis increases the influence on the positioning. Under the same situation, the change trends of deformation and stress distribution of connection mechanism can be obtained by changing the surface loads. The maximum deformation and stress increase with the loads. However, for ever-increasing market demand, it is not adequate to only consider high acceleration under accuracy requirement. The higher acceleration is needed by light weight of connection frame. Therefore, an optimization model is built and studied, which takes the weight of connection frame as objective and takes the thermal deformation as constraint. Connection frame structure model can be calculated in ANSYS and the optimal solution can be obtained by genetic algorithm (GA) in MATLAB. With MATLAB and ANSYS optimization, the rate of convergence has been improved by 3%. Design variables for optimal solution are obtained. The weight and the maximum thermal-structural coupling displacement have been improved by 24.3% and 27.3% respectively. The first six order vibration modes of connection frame are obtained by the finite element method. And the simulation data can be verified by experiment. At last, an optimization connection frame structure considering thermal-structure coupling deformation is obtained.

Designing and Construction of Monolithic Moving for an Office Building

2011 ◽  
Vol 243-249 ◽  
pp. 5491-5495
Author(s):  
Shi Yong Zhao ◽  
Tie Cheng Wang
Keyword(s):  
Urban Planning ◽  
Frame Structure ◽  
Office Building ◽  
Construction Technology ◽  
Structure Building ◽  
Selection Of ◽  
Track Beam

Monolithic moving of the buildings has supplied a new choice for the urban planning and reforming. The paper studied the designing and construction of monolithic moving for a four-story frame structure building, and introduced a series of calculating methods and construction technology, including the arrangement of the track beam，the calculation of the underpinning joint, the calculation and selection of the underpinning system，the selection and arrangement of the rolling device, the construction controls of moving, and the connecting of the new foundation.

Sign in / Sign up

Export Citation Format

Share Document