Study on the Static Load Test of Bridge Inspection

2014 ◽  
Vol 971-973 ◽  
pp. 1156-1159
Author(s):  
Fang Tian ◽  
Guang Ming Xu
Keyword(s):  
Strain Distribution ◽  
Bridge Deck ◽  
Static Load ◽  
Load Test ◽  
System Control ◽  
Bridge Structure ◽  
Control Parameters ◽  
Static Load Test ◽  
Bridge Inspection ◽  
Vehicle Structure

This practice mainly according to different position arrangement of bridge load vehicles (load test), then test the loading vehicle structure under the action of deformation and strain distribution in the cross section of the bridge deck system control parameters, such as through data and theoretical analysis, the test evaluates the performance of the bridge structure.

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.

Static Load Test and Data Analysis of Tiansheng Bridge

2014 ◽  
Vol 638-640 ◽  
pp. 1107-1110
Author(s):  
Hai Xia Ao ◽  
Yue Zhang ◽  
Yu Ping Yue
Keyword(s):  
Static Load ◽  
Great Depth ◽  
Scientific Basis ◽  
Load Test ◽  
Bridge Structure ◽  
Static Load Test ◽  
Work Condition ◽  
Test Load ◽  
Testing Program ◽  
Bridge Safety

The static load test schemes of Tiansheng bridge are briefly discussed . Through the comparative analysis of the theory values and the measured values , understand the actual work condition of bridge structure under test load and evaluate the bearing capacity of bridge structure .Through comparison of modeling datas and the measured values , test correctness of testing program, providing a scientific basis for the bridge safety and research in great depth.

Bridge Structure Performance Evaluation Based on Dynamic Load Test

2012 ◽  
Vol 238 ◽  
pp. 694-696 ◽  
Author(s):  
Yan Zeng
Keyword(s):  
Prestressed Concrete ◽  
Static Load ◽  
Load Test ◽  
Bridge Structure ◽  
Static Load Test ◽  
Box Girder ◽  
Dynamic Load Test ◽  
Actual Service ◽  
Calculation Results ◽  
Service State

Static load test was carried out on Hengshui interchange ramp bridge of Lin-Chang expressway. The superstructure of the bridge is cast-in-place prestressed concrete continuous box-girder. The actual service state of the bridge is analyzed by the comparison of experimental and calculation results. The study provides the initial technical files and the basis of acceptance, operation, maintenance and management for the bridge.

Inspection and Evaluation of Load-Bearing Capacity of Single Tower Composite Girder Cable-Stayed Bridge

2012 ◽  
Vol 538-541 ◽  
pp. 1785-1788
Author(s):  
Xie Dong Zhang ◽  
Jin Zhi Wang ◽  
Jun Feng Guo
Keyword(s):  
Bearing Capacity ◽  
Dynamic Load ◽  
Static Load ◽  
Load Test ◽  
Bridge Structure ◽  
Static Load Test ◽  
Test Measure ◽  
Cable Stayed Bridge ◽  
Composite Girder ◽  
Dynamic Load Test

In order to evaluate single tower composite girder Cable Bridge actual bearing capacity and working property on design using load, a single-tower composite girder cable-stayed bridge is taken as an example, by means of static load test, dynamic load test, reasonably measures evaluates the single tower composite girder cable-stayed bridge's bearing capacity. The static load test measure static properties of bridge structure (static strain, static deflection, etc.), dynamic load test, measure the dynamic properties of bridge structure (vibration frequency, damping, forced vibration amplitude, impact coefficient, etc.). Results show that the rigidity strength integrity and dynamic characteristics of bridge structure are favorable; the structure’s bearing capacity is favorable.

Study on the Static Load Test of Bridge Inspection

2013 ◽  
Vol 859 ◽  
pp. 149-152
Author(s):  
Fan Liu ◽  
Xiao Hong He
Keyword(s):  
Static Load ◽  
Mechanical Performance ◽  
Practical Experience ◽  
Load Test ◽  
Static Load Test ◽  
Bridge Inspection ◽  
Inspection Techniques

Combined with practical experience in engineering, this paper analyzed the necessity of the bridges for detection with the use of on-site static load test. Also, it introduced the content and methods of the trial, as well as the studied domestic and international inspection techniques, thus discovering the engineering mechanical performance for bridges.

Experimental Analysis and Performance Evaluation of Fu Feng Highway Prestressed Concrete Bridge after Strengthening in China

2011 ◽  
Vol 189-193 ◽  
pp. 2346-2352
Author(s):  
Ali Fadhil Naser ◽  
Zong Lin Wang
Keyword(s):  
Prestressed Concrete ◽  
Static Load ◽  
Load Test ◽  
Concrete Bridge ◽  
Bridge Structure ◽  
Structural Members ◽  
Static Load Test ◽  
Box Girders ◽  
Transverse Beam ◽  
Prestressed Concrete Bridge

Fu Feng highway prestressed concrete bridge is located in Changchun City which is the capital and largest city of Jilin province and it located in the northeast of China. The strengthening of the bridge structural members can be attempted by replacing poor quality or defective materials by better quality materials, attaching additional load-bearing materials, and re-distribution of the loading actions through imposed deformation on the structure system. The objectives of this study are to explain the strengthening process of damaged structural members of Fu Feng bridge, and to evaluate the performance of the bridge structure by adopting static load test. The strengthening process of damaged structural members includes three stages. These stages include the strengthening of box girders floor by casting of 10cm of reinforced concrete in the floor of box girder within the location of positive bending moment in the mid-span and edge span, the strengthening of box girders web by pasting steel plates in the inside of the right and left of box girders, and the strengthening of the transverse beam of piers No. 18 and No. 19 by using carbon fiber sheet. The results of static load test show that the values of testing coefficient ( ) of stress range from 0.83 to 0.92 are less than allowable value 1.05. Therefore, these values satisfy the allowable value of standard, indicating that the structural member has a certain strength reserve and the working state of the bridge structure in good state. the ratio between the measured and theoretical deflection is 1.41 and 1.68 for condition 3 more than allowable value 0.8, indicating that the state of stiffness is not good and there are still a serious shortage in stiffness of structure. Therefore, this study recommended that the bridge structural members need to re-strengthen by using other effective technical and materials to increase the stiffness of structural members of the bridge.

Comparative Analysis of Dynamic/Static Load Tests on Simple Supported Beam Bridge Based on Load Efficiency

2011 ◽  
Vol 368-373 ◽  
pp. 2011-2015
Author(s):  
Xian Min Zhang ◽  
Xiao Hui Guo
Keyword(s):  
Quantitative Assessment ◽  
Static Load ◽  
Load Test ◽  
Calibration Coefficient ◽  
Static Load Test ◽  
Bridge Inspection ◽  
Inspection Method ◽  
Static Calibration ◽  
Load Tests ◽  
Beam Bridge

Static load test is now recognized as a reliable bridge inspection method. However, this method has to interrupt transportation and consume manpower and material greatly. Firstly, this paper introduced the mathematic relation between static calibration coefficient and dynamic calibration coefficient, which are achieved by dynamic/static load tests with different load efficiencies—by comparing them, the proposed equation are verified. Quantitative assessment of bridge is achieved by combining dynamic load inspection method.

scholarly journals ALTERNATIF UJI BEBAN PADA STRUKTUR (STUDI KASUS : JEMBATAN BAJA)

2021 ◽  
Vol 5 (1) ◽  
pp. 27
Author(s):  
Chairul Soleh ◽  
Josia Irwan Rastandi
Keyword(s):  
Natural Frequency ◽  
Dynamic Load ◽  
Static Load ◽  
Natural Frequencies ◽  
Load Test ◽  
Vibration Test ◽  
Steel Bridge ◽  
Bridge Structure ◽  
Static Load Test ◽  
Dynamic Load Test

The most common structural load test that has been widely used is the static load test. An alternative to the structural load test is dynamic load test. Dynamic testing is a test carried out to determine level of structural stiffness or structural elements stiffness in the form of natural frequencies, while the static load test is intended to obtain responses of static loading from the structure in the form of deflection. The discussion will emphasize the correlation between static load test and dynamic load test. To correlate the static load test with the vibration test, a reference or value that comes from modeling or theoretical analysis is needed. Structural modeling is carried out to obtain the theoretical natural frequency and the theoretical deflection which will then be compared with the natural frequency of the vibration test (dynamic). If the frequency of the test results and the theoretical frequency are compared to the theoretical deflection, the prediction of the test deflection will be obtained. The correlation between the predicted deflection of the test and deflection of the static load test is quite close with a difference of less than 12%. Judging from the above correlation, periodic inspections of the tested structures can be considered for vibration testing only. The types of structures reviewed are simple span steel bridge structure, simple span + link slab steel bridge structure and continuous span steel bridge structure. Keywords: modeling; natural frequencies; vibration testing; static load test  AbstrakUji beban struktur yang umum dan sudah banyak dilakukan adalah uji beban statik. Alternatif lain dari uji beban adalah dengan melakukan pengujian vibrasi (dinamik) pada struktur. Pengujian vibrasi (dinamik) dilakukan untuk mengetahui tingkat kekakuan struktur atau elemen struktur berupa frekuensi alami, sedangkan uji beban statik dimaksudkan untuk mendapatkan respons hasil pembebanan statik dari struktur berupa lendutan. Pembahasan akan menekankan kepada korelasi antara uji beban statik dan uji beban vibrasi (dinamik). Untuk mengkorelasikan pengujian beban statik terhadap pengujian vibrasi (dinamik) diperlukan suatu acuan atau nilai yang berasal dari analisa pemodelan atau teoritis. Pemodelan struktur dilakukan untuk mendapatkan frekuensi alami secara teoritis dan lendutan teoritis yang kemudian akan dibandingkan dengan frekuensi alami hasil uji vibrasi (dinamik).  Jika frekuensi hasil uji dan frekuensi teoritis dibandingkan terhadap lendutan teoritis maka akan didapatkan prediksi lendutan uji. Hasil korelasi antara prediksi lendutan uji terhadap lendutan uji beban statik cukup mendekati dengan perbedaan kurang dari 12%. Dilihat dari korelasi diatas, maka untuk pemeriksaan berkala pada struktur yang telah diuji dapat dipertimbangkan untuk dilakukan pengujian vibrasi saja. Jenis struktur yang ditinjau adalah struktur jembatan baja simple span, simple span + link slab dan continuous span.

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