Shaking table test of seismic responses of anchor cable and lattice beam reinforced slope

2020 ◽  
Vol 17 (5) ◽  
pp. 1251-1268
Author(s):  
Jian-jing Zhang ◽  
Jia-yong Niu ◽  
Xiao Fu ◽  
Li-cong Cao ◽  
Qiang Xie
Keyword(s):  
Shaking Table Test ◽  
Shaking Table ◽  
Seismic Responses ◽  
Reinforced Slope ◽  
Anchor Cable ◽  
Lattice Beam

scholarly journals Shaking Table Test on the Seismic Responses of a Slope Reinforced by Prestressed Anchor Cables and Double-Row Antisliding Piles

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Zuo-ju Wu ◽  
Zhi-jia Wang ◽  
Jun-wei Bi ◽  
Xiao Fu ◽  
Yong Yao
Keyword(s):  
Shaking Table ◽  
Test Results ◽  
Seismic Responses ◽  
Slope Surface ◽  
Soil Pressure ◽  
Double Row ◽  
Reinforced Slope ◽  
Composite Support ◽  
Anchor Cable ◽  
Prestressed Anchor

The combined retaining structure has gradually received considerable attention in the slope engineering, due to its good reinforcement effects. However, most of the published research studies were focused on the seismic responses of the single-formal supporting structure only. The investigations of dynamic responses of the combined retaining structures are scarce, and the current seismic design is conducted mainly based on experiences. In this work, a series of large-scale shaking table tests were conducted to investigate the seismic responses of the combined retaining structures (i.e., prestressed anchor cables and double-row antisliding piles) and the reinforced slope under seismic excitations, including amplification effect of internal and surface acceleration of the reinforced slope, distribution and change of prestress of the anchor cable, dynamic response of soil pressure behind the antislide pile, and horizontal displacement of the reinforced slope surface. Test results show that, supported by the reinforcement of composite support system, the slope with the multilayer weak sliding surface can experience strong ground motion of 0.9 g. The load of the antisliding pile has reached 80% of its bearing capacity, and the load of the anchor cable has reached 75.0% of its bearing capacity. When the seismic intensity reaches 0.5 g, the slope surface has an obvious downward trend, which will make the corresponding soil pressure suddenly increase after the antislide pile. At the potential sliding zone, the axial force of the anchor cable will increase suddenly under the action of earthquake; after the earthquake, the initial prestress of the anchor cable will be lost, with the loss range of 17.0%∼23.0%. These test results would provide an important reference for the further study of the seismic performance of such composite support structure.

scholarly journals Shaking Table Test of a RC Frame with EPSC Latticed Concrete Infill Wall

2017 ◽  
Vol 2017 ◽  
pp. 1-18 ◽  
Author(s):  
Baizan Tang ◽  
Xiaojun Li ◽  
Su Chen ◽  
Lihong Xiong
Keyword(s):  
Shaking Table Test ◽  
Comprehensive Evaluation ◽  
Shaking Table ◽  
Wall Material ◽  
Rc Frame ◽  
Seismic Responses ◽  
Concrete Wall ◽  
Infill Wall ◽  
Infill Walls ◽  
Rc Shear Wall

The expansive polystyrene granule cement (EPSC) latticed concrete wall is a new type of energy-saving wall material with load-bearing, insulation, fireproof, and environmental protection characteristics. A series of shaking table tests were performed to investigate the seismic behavior of a full-scale reinforced concrete (RC) frame with EPSC latticed concrete infill wall, and data obtained from the shaking table test were analyzed. The experimental results indicate that the designed RC frame with EPSC latticed concrete infill wall has satisfactory seismic performance subjected to earthquakes, and the seismic responses of the model structure are more sensitive to input motions with more high frequency components and long duration. The EPSC latticed concrete infill wall provided high lateral stiffness so that the walls can be equivalent to a RC shear wall. The horizontal and vertical rebar, arranged in the concrete lattice beam and column, could effectively restrain the latticed concrete infill wall and RC frame. To achieve a more comprehensive evaluation on the performance of the RC frame with latticed concrete infill walls, further research on its seismic responses is expected by comparing with conventional infill walls and nonlinear analytical method.

Experimental Investigation on Mid-Story Isolated Structures

2010 ◽  
Vol 163-167 ◽  
pp. 4014-4021
Author(s):  
Xiang Yun Huang ◽  
Fu Lin Zhou ◽  
She Liang Wang ◽  
Liu Han Wen Heisha ◽  
Xue Hai Luo
Keyword(s):  
Dynamic Characteristics ◽  
Shaking Table Test ◽  
Base Isolation ◽  
Shaking Table ◽  
Dynamic Responses ◽  
Seismic Responses ◽  
Isolation Technique ◽  
Vertical Stiffness ◽  
Isolation Layer ◽  
Rubber Bearings

Isolation technique has been acceded as a part of the China Seismic Code for Design of Buildings. In this code, the limitations for using isolation design are very strict, superstructure must be regular and the isolation layer must be located on the top of base (base isolated structure). Because of the needs of architecture and function or the feasibility of technique, some limitations have been broken in recent projects. Sometimes isolated layer can be set on the intermediate story, so-called the mid-story isolated structure. According to the characteristic of structure, isolation layer of mid-story isolated structure is set on a place where the structure’s vertical stiffness is suddenly changed, as like the top of the first story, middle story, conversion story of the structure. Laminated rubber bearings (LRB) are adopted as an isolation layer. Because the isolation layer is set on intermediate story, the whole structure is divided into superstructure and substructure; the structure’s dynamic characteristics are changed. The mechanism of mid-story isolated structure appears different characteristic compared with base isolation. The aim of mid-story isolation is not only to reduce seismic responses of superstructure, but also to reduce seismic responses of the substructure. Theoretical analysis and the shaking table test of the mid-story isolated structure were carried. And the response of mid-story isolated structure is discussed by comparing with the response of base-isolated structure and base fixed structure. The key problems of mid-story isolated structure are the force condition and the interaction of the structure up and below the isolation layer. Many factors, such as the number of story, mass, stiffness of superstructure and substructure, parameter of the isolation layer, have influence on the seismic behavior of the mid-story isolated structure. The optimum combination relationship of these factors is presented and dynamic characteristics and dynamic responses are investigated.

Shaking Table Test Study on Seismic Responses of Base-Isolated Buildings under Near-Fault Ground Motions

2014 ◽  
Vol 1020 ◽  
pp. 457-462
Author(s):  
Miao Han ◽  
Yan Ling Duan ◽  
Huan Sun
Keyword(s):  
Shaking Table Test ◽  
Ground Motions ◽  
Shaking Table ◽  
Scale Model ◽  
Seismic Responses ◽  
Velocity Pulse ◽  
Isolation System ◽  
Near Fault ◽  
Test Study ◽  
Isolated Structures

The shaking table tests of a 1:7 scale model of three-floor steel frame base-isolated building was completed to study the seismic responses of base-isolated buildings under near-fault ground motions. Under the action of the typical near-fault seismic wave, the seismic responses of base-isolated structures increase with the increase of PGA. The maximum story displacements of super-structure decrease with increase of story. The velocity pulse has an adverse effect to acceleration responses of base-isolated structures. The isolation effect of base-isolated super-structures is still favorable under near-fault ground motions, but it will be necessary to add damping in isolation system or limit the displacement of bearings to prevent the excessive deformation of isolation layer.

Seismic responses of deep buried pipeline under non-uniform excitations from large scale shaking table test

2018 ◽  
Vol 113 ◽  
pp. 180-192 ◽  
Author(s):  
Kongming Yan ◽  
Jianjing Zhang ◽  
Zhijia Wang ◽  
Weiming Liao ◽  
Zuoju Wu
Keyword(s):  
Large Scale ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Buried Pipeline ◽  
Seismic Responses

Seismic responses of a subway station and tunnel in a slightly inclined liquefiable ground through shaking table test

2019 ◽  
Vol 116 ◽  
pp. 371-385 ◽  
Author(s):  
Zhuang Haiyang ◽  
Wang Xu ◽  
Miao Yu ◽  
Yao Erlei ◽  
Chen Su ◽  
...  
Keyword(s):  
Shaking Table Test ◽  
Shaking Table ◽  
Subway Station ◽  
Seismic Responses

Dynamic Properties and Seismic Responses of the Masonry Structure Model Strengthened with BFRP Laminates

2012 ◽  
Vol 446-449 ◽  
pp. 3279-3286
Author(s):  
Li Hua Xu ◽  
Si Zhang ◽  
Xiao Bin Hu ◽  
Ming Jie Zhang ◽  
Fan Yang ◽  
...  
Keyword(s):  
Shaking Table Test ◽  
Dynamic Properties ◽  
Masonry Structure ◽  
Test Method ◽  
Shaking Table ◽  
Test Model ◽  
Structure Model ◽  
Seismic Responses ◽  
Reinforced Masonry ◽  
The Impact

To study the dynamic properties and seismic responses of masonry structure strengthened with Basalt Fiber Reinforced Plastic (BFRP) laminates, modal experiment and shaking table test were performed on a two-storey and two-bay masonry structure model involving constructional columns. Through the test, the dynamic properties of reinforced masonry structure were obtained, the development of cracks and degradation of stiffness of the reinforced masonry structure under earthquake were studied and the variations of displacement, acceleration, stress of this structure were analyzed. Based on the modal experiment using the impact hammer test method, a simplified numerical analysis model of the test model was proposed for modal analysis. From the shaking table test, it is concluded that BFRP laminates can slow down the degradation of structural stiffness and the development of cracks effectively, and the masonry structure reinforced with BFRP laminates has excellent seismic performance.

Sign in / Sign up

Export Citation Format

Share Document