The Analysis and Application Research on the Space Work of Portal Frame

2012 ◽  
Vol 166-169 ◽  
pp. 501-504
Author(s):  
Xiao Wei Zhang ◽  
Zhong Ming Xiong ◽  
Ni Na Su
Keyword(s):  
Finite Element ◽  
Static Load ◽  
Load Test ◽  
Vertical Load ◽  
Static Load Test ◽  
Actual Structure ◽  
Finite Element Software ◽  
Portal Frame ◽  
Space Effect ◽  
Field Static

In this paper, the application of finite element software with the actual structure of the field static load test for the engineering background, describes the space effect of portal frame under vertical load. Established a gymnasium mode of portal frame through the finite element software, quantitative analysis the space effect under the vertical load, and studied the spatial interaction of longitudinal anti-lateral component to the overall structure, and compared with the results of the field static load test. The calculation results show that, the reduction of spatial effect to internal forces under the vertical load should be considered in design. It is important that a reasonable increase in rigid tie and support can enhance the space effect of the whole portal frame.

scholarly journals Study on Bearing Mechanism of Split Grouting Pile Based on Finite Element Simulation

2021 ◽  
Vol 2101 (1) ◽  
pp. 012008
Author(s):  
Jinman Wang ◽  
Shaofei Li ◽  
Mingru Zhou ◽  
Lin Zhong ◽  
Yiming Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Static Load ◽  
Load Test ◽  
Engineering Practice ◽  
Static Load Test ◽  
Element Analysis ◽  
Grouting Pressure ◽  
The Finite Element Analysis ◽  
Field Static

Abstract In order to realize the directional and controllable splitting of splitting grouting, the field grouting test was carried out. Using a new grouting pipe designed, the splitting direction and size of the branch vein are effectively controlled through the control of grouting pressure and grouting amount. In order to explore the bearing characteristics of split grouting pile and provide necessary parameters for the design of split grouting pile composite foundation in engineering practice, the field static load test and indoor geotechnical test of split grouting pile are designed, and the ultimate bearing capacity of single pile and necessary soil parameters are obtained. In order to make up for the limitations of field static load test, the three-dimensional finite element model of pile, soil and branch vein of split grouting pile is established by using the finite element analysis software ABAQUS. The finite element analysis results are compared with the measured values of field test, and the variation laws of pile shaft axial force, stress and displacement of branch vein at different depths, pile side friction, etc. are further explored, Through these changes, the interaction and load transfer mechanism between pile and soil are analyzed, which provides a reference for optimal design.

The Modification to the FEM Model of the Prestressed Concrete Beam with the Combination of the Data of Static and Dynamic Test

2014 ◽  
Vol 707 ◽  
pp. 401-405
Author(s):  
Tao He ◽  
Chong Ji Zhao
Keyword(s):  
Prestressed Concrete ◽  
Static Load ◽  
Dynamic Test ◽  
Load Test ◽  
State Variables ◽  
Static Load Test ◽  
Fem Model ◽  
Modified Model ◽  
Finite Element Software ◽  
T Beam

Using the finite element software ANSYS to establish the model of prestressed concrete T beam .With the combination of dynamic and static load test data, the objective function was constructed by taking the vertical deflection of the static load test and the top five vertical natural frequency of dynamic test as state variables. The results revealed that,after being modified ,the error between the calculation value and the testal results of the model was converged in a reasonable error range.In addition ,The modified model could be used in the assessment of bridge structure performance,and it shows the practical application value.

Investigation of a Double-Arched Bridges Mechanical Behavior by the Static Load Test

2014 ◽  
Vol 501-504 ◽  
pp. 1297-1300
Author(s):  
Hai Yun Huang ◽  
Jun Ping Zhang
Keyword(s):  
Finite Element ◽  
Comparative Analysis ◽  
Working Conditions ◽  
Static Load ◽  
Element Model ◽  
Load Test ◽  
Structural Deformation ◽  
Static Load Test ◽  
Load Bearing Capacity ◽  
Calculation Results

An on-site static load test of a reinforced concrete double-arch bridge with fracture is carried out, and a comparative analysis of the measured experimental results of the bridge working conditions and the calculation results of Midas/civil Finite Element Model is performed. The results show that the performance and structural deformation recoverability of the bridge is weak. The bridges overall load-bearing capacity does not satisfy its designed requirements.

Study of Load Test of Pedestrian Suspension Bridge

2010 ◽  
Vol 163-167 ◽  
pp. 2670-2673
Author(s):  
Yun Liu ◽  
Dong Huang Yan
Keyword(s):  
Static Load ◽  
Suspension Bridge ◽  
Load Test ◽  
Static Load Test ◽  
Element Analysis ◽  
Pedestrian Bridge ◽  
The Finite Element Analysis ◽  
Field Static ◽  
Strength And Stiffness ◽  
Test Loading

This study focuses on test loading program and evaluation for pedestrian bridge. On the basis of the finite element analysis, numerical model of Lv River Bridge, which is a steel box pedestrian suspension bridge, is established. Moreover, field static load test is done and the results of tests are compared to the theoretical values. Results show that the measured result fits well with the theoretical result and bridge is in the situation of elastic deformation, and the strength and stiffness satisfy the need of design.

Study on Detection Method of Bridge Structure Based on Quasi-Static Test

2014 ◽  
Vol 501-504 ◽  
pp. 1148-1151
Author(s):  
Chun Heng Feng ◽  
Yan Gao ◽  
Xi Sha Jin ◽  
Xing Na Shi
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Dynamic Load ◽  
Static Load ◽  
Element Model ◽  
Load Test ◽  
Bridge Structure ◽  
Static Load Test ◽  
Static Test ◽  
Dynamic Load Test

Currently the bridge structure detections are mainly based on static load test and dynamic load test. The static load test has shortcomings of less test data, long time-consumption and high cost. However, the dynamic load test has the advantages of quick and convenient, its related technologies and theories are still not mature enough. To solve this problem, the detection of bridge structure based on quasi-static test is proposed in this paper. Quasi-static load is applied on the structure by moving the standard load vehicle slowly. Then create the structural finite element model and modify the model according to the measured data to make it consistent with the actual structure. The bridge actual structural mechanical properties can be acquired by conducting load test on the optimized structural finite element model. By doing this, the bridge safety could be evaluated quickly.

scholarly journals Analysis of the Barrette Load Investigation of the Tallest Building in European Union

2018 ◽  
Vol 64 (4) ◽  
pp. 281-292
Author(s):  
G. Kacprzak ◽  
S. Bodus
Keyword(s):  
European Union ◽  
Static Load ◽  
Ground Level ◽  
Load Test ◽  
Construction Site ◽  
Vertical Load ◽  
Static Load Test ◽  
High Rise ◽  
Piled Raft Foundation ◽  
Diaphragm Walls

AbstractThe paper presents a static load test of a pile with the largest vertical load in Poland to-date up to the force of 23000 kN. The test was performed in the centre of Warsaw on the construction site of a future high-rise building to be the tallest building in European Union. The designed building height measured from the ground level is 310 meters including an 80-metre mast. The foundation of the building was designed as a Combined Piled Raft Foundation (CPRF) utilising the barrettes and diaphragm walls technology. The test was carried out on barrettes with lengths of approx. 28 and 34 m and was aimed to estimate the stiffness (load-settlement relation) of the designed 17.5 metre-long barrette situated below the foundation level. In addition to that a series of extensometric sensors was placed inside the barrette to determine the distribution of the axial force.

Assessment & Analysis of Service Performance for Small-Span Suspension Bridge with Steel Truss Girders

2012 ◽  
Vol 178-181 ◽  
pp. 2187-2191
Author(s):  
Hao Sun ◽  
Yong Jiu Qian ◽  
Fang Zhang
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Static Load ◽  
Service Performance ◽  
Load Test ◽  
Suspension Bridges ◽  
Static Load Test ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Steel Truss

Most of the short span suspension bridges with steel truss girders early constructed will approach their design service life. Correctly evaluating the actual service performance is the basic basis of repairing, strengthening and technical reconstruction. First, load-bearing capacity evaluation based on static load test was briefly introduced. Then, combined with Chengnan bridge, the main existing damages and their causations of the bridge were summarized and analyzed. Based on the field detection datum and original design load grade, the finite element mode with some damages was established. Then, by analyzing the calculation results, the scheme of static load test was confirmed. Through comparing the static load test results with the results of upgraded finite element, the actual conditions of the existing bridge structure were evaluated. In order to resume its load-bearing capacity, some of measurements and suggestions of strengthening were proposed.

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