Lifting Test and Analysis of a Segmented Arch System with Outrigger Ribs and Flexural Loading Tests of Precast Panels

2021 ◽  
Author(s):  
Seok Hyeon Jeon ◽  
Kwang-Il Cho ◽  
Won-Hong Lee ◽  
Jungwon Huh ◽  
Jin-Hee Ahn
Keyword(s):  
Flexural Loading ◽  
Arch System ◽  
Loading Tests

Evaluation of rigid rotations in flexural loading tests by holographic interferometry

1997 ◽  
Vol 37 (2) ◽  
pp. 154-158
Author(s):  
S. De Nicola ◽  
P. Ferraro ◽  
A. Finizio ◽  
A. Liguori ◽  
G. Pierattini
Keyword(s):  
Holographic Interferometry ◽  
Flexural Loading ◽  
Loading Tests

Analysis of Rigid Rotations in Holographic Interferometry for Simple Flexural Loading Tests

1997 ◽  
Vol 27 (4) ◽  
pp. 369-378 ◽  
Author(s):  
S. De Nicola ◽  
P. Ferraro ◽  
A. Finizio ◽  
G. Pierattini
Keyword(s):  
Holographic Interferometry ◽  
Flexural Loading ◽  
Loading Tests

Cyclic loading tests on exposed column-base plate weak-axis connections of small-size steel structures

2017 ◽  
Vol 153 ◽  
pp. 653-664
Author(s):  
Woo-Young Lim ◽  
Dongkeun Lee ◽  
Young-Chan You
Keyword(s):  
Cyclic Loading ◽  
Steel Structures ◽  
Base Plate ◽  
Loading Tests ◽  
Cyclic Loading Tests ◽  
Column Base

Development of a Visual Monitoring System for Deformation Measuring of Welded Members and its Application

2008 ◽  
Vol 580-582 ◽  
pp. 557-560 ◽  
Author(s):  
J.G. Han ◽  
Kyong Ho Chang ◽  
Gab Chul Jang ◽  
K.K. Hong ◽  
Sam Deok Cho ◽  
...  
Keyword(s):  
Monitoring System ◽  
Three Dimensional ◽  
Measuring Method ◽  
Welding Residual Stress ◽  
Measuring System ◽  
Visual Monitoring ◽  
Test Error ◽  
Steel Members ◽  
Loading Tests ◽  
Visual Monitoring System

Recently, in the loading tests for steel members, the deformation value is measured by calculating a distance of both cross-heads. This measuring method encounters a test error due to various environmental factors, such as initial slip, etc.. Especially, in the case of welded members, the non-uniform deformation behavior in welded joints is observed because of the effect of welding residual stress and weld metal. This is mainly responsible for a test error and a loss of the reliability for used test instruments. Therefore, to improve the accuracy and the applicability of measuring system, it is necessary to employ a visual monitoring system which can accurately measure the local and overall deformation of welded members. In this paper, to accurately measure a deformation of welded members, a visual monitoring system (VMS) was developed by using three-dimensional digital photogrammetry. The VMS was applied to the loading tests of a welded member. The accuracy and the applicability of VMS was verified by comparing to the deformation value measured by a test instrument (MTS-810). The characteristics of the behavior near a welded joint were investigated by using VMS.

scholarly journals Smart Sensing of PSC Girders Using a PC Strand with a Built-in Optical Fiber Sensor

2021 ◽  
Vol 11 (1) ◽  
pp. 359
Author(s):  
Sung Tae Kim ◽  
Hyejin Yoon ◽  
Young-Hwan Park ◽  
Seung-Seop Jin ◽  
Soobong Shin ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Prestressed Concrete ◽  
Steel Wire ◽  
Optical Fiber Sensor ◽  
Fiber Reinforced Polymer ◽  
Bridge Structure ◽  
Fbg Sensor ◽  
Prestressing Force ◽  
Reinforced Polymer ◽  
Loading Tests

This paper presents a multi-functional strand capable of introducing prestressing force in prestressed concrete (PSC) girders and sensing their static and dynamic behavior as well. This innovative strand is developed by replacing the core steel wire of the strand used in PSC structures with a carbon fiber-reinforced polymer (CFRP) wire with a built-in optical Fiber Bragg Grating (FBG) sensor. A full-scale girder specimen was fabricated by applying this multi-function strand to check the possibility of tracking the change of prestressing force at each construction stage. Moreover, dynamic data could be secured during dynamic loading tests without installing accelerometers and made it possible to obtain the natural frequencies of the structure. The results verified the capability to effectively manage the prestressing force in the PSC bridge structure by applying the PC strand with a built-in optical sensor known for its outstanding practicability and durability.

Experimental study of moment carrying behavior of typical Tibetan timber beam-column joints

2021 ◽  
pp. 136943322110015
Author(s):  
Ting Guo ◽  
Na Yang ◽  
Huichun Yan ◽  
Fan Bai
Keyword(s):  
Bending Moment ◽  
Structural Performance ◽  
Test Results ◽  
Timber Beam ◽  
Rotational Stiffness ◽  
Trilinear Model ◽  
Column Joint ◽  
Loading Tests ◽  
The Moment ◽  
Relationship Of

This study aimed to investigate the moment carrying behavior of typical Tibetan timber beam-column joints under monotonic vertical static load and also evaluate the influence of length ratio of Gongmu to beam (LRGB) and dowels layout on the structural performance of the joint. Six full-scale specimens were fabricated with same construction but different Gongmu length and dowels position. The moment carrying performance of beam-column joints in terms of failure mode, moment resistance, and rotational stiffness of joints were obtained via monotonic loading tests. Test results indicated that all joints are characterized by compressive failure perpendicular to grain of Ludou. Additionally, it was found that greater LRGB leads to greater initial rotational stiffness and maximum moment of the joint by an increase of restraint length for beam end; however, offsetting dowels toward column resulted smaller stiffness and ultimate bending moment of joints, particularly, offsetting Beam-Gongmu dowels toward column changed the moment-rotation curve pattern of the beam-column joint, accompanied by a hardening stiffness at last phase. Furthermore, a simplified trilinear model was proposed to represent the moment-rotation relationship of the typical Tibetan timber beam-column joint.

Experimental investigation on M50 grade concrete beams with influence of aggregate interlocking and dowel action under flexural loading

2020 ◽  
Vol 33 ◽  
pp. 1158-1164
Author(s):  
Joshi Sreenivasa Prasad ◽  
P. Poluraju ◽  
Umesh K. Singh
Keyword(s):  
Experimental Investigation ◽  
Concrete Beams ◽  
Flexural Loading ◽  
Dowel Action ◽  
Aggregate Interlocking
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