Bearing capacity and settlement of raft-pile foundations under cyclic loading

Steel braces are widely used in seismic retrofit of buildings. However, their tendency of buckling under compression impairs their efficacy. In this paper, characteristics of a cross bracing with rigid intersection, including its bearing capacity, hysteretic property and fracture ductility are investigated. With the analysis results, performance-based design requirements of a steel cross bracing are proposed based on its width-thickness ratio and effective slenderness ratio.

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Geotechnical Properties of Anthropogenic Soils in Road Engineering

Sustainability ◽

10.3390/su12124843 ◽

2020 ◽

Vol 12 (12) ◽

pp. 4843

Author(s):

Andrzej Głuchowski ◽

Katarzyna Gabryś ◽

Emil Soból ◽

Raimondas Šadzevičius ◽

Wojciech Sas

Keyword(s):

Cyclic Loading ◽

Bearing Capacity ◽

Construction Material ◽

Bottom Ash ◽

Field Tests ◽

Recycled Concrete ◽

Concrete Aggregate ◽

Test Results ◽

Anthropogenic Soils ◽

Road Engineering

The construction of a roads network consumes high amounts of materials. The road materials are required to fulfill high standards like bearing capacity and low settlement susceptibility due to cyclic loading. Therefore, crushed aggregates are the primary subbase construction material. The material-intensity of road engineering leads to depletion of natural resources, and to avoid it, the alternative recycled materials are required to be applied to achieve sustainable development. The anthropogenic soils (AS), which are defined as man-made unbound aggregates, are the response to these requirements. For the successful application of the AS, a series of geotechnical laboratory and field tests were conducted. In this article, we present the set of 58 test results, including California Bearing Ratio (CBR) bearing capacity tests, oedometric tests, and cyclic CBR tests, to characterize the behavior of three AS types and to compare its reaction with natural aggregate (NA). The AS tested in this study are recycled concrete aggregate (RCA), fly ash and bottom ash mix (BS), and blast furnace slag (BFS). The results of the tests show that the AS has similar characteristics to NA, and in some cases, like compression characteristic, RCA and BFS behave a stiffer response to cyclic loading. The test results and analysis presented here extend the knowledge about AS compressibility and AS response to cyclic loading.

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Load bearing capacity and Weibull characteristics of inlay-retained resin-bonded fixed dental prosthesis made of all-ceramic, fiber-reinforced composite and metal-ceramic after cyclic loading

Journal of the Mechanical Behavior of Biomedical Materials ◽

10.1016/j.jmbbm.2020.103855 ◽

2020 ◽

Vol 109 ◽

pp. 103855

Author(s):

Kim-Chi Brunner ◽

Mutlu Özcan

Keyword(s):

Cyclic Loading ◽

Bearing Capacity ◽

Ceramic Fiber ◽

Load Bearing Capacity ◽

Load Bearing ◽

Fiber Reinforced Composite ◽

Fixed Dental Prosthesis ◽

Reinforced Composite ◽

All Ceramic ◽

Metal Ceramic

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Experimental Analysis of Seismic Performance of Masonry Shear Wall Reinforced with PP-Band Mesh and Plastering Mortar under In-Plane Cyclic Loading

Advances in Civil Engineering ◽

10.1155/2020/4015790 ◽

2020 ◽

Vol 2020 ◽

pp. 1-13

Author(s):

Qiang Zhou ◽

Lingyu Yang ◽

Wenyang Zhao

Keyword(s):

Energy Dissipation ◽

Cyclic Loading ◽

Bearing Capacity ◽

Low Cost ◽

Low Frequency ◽

Masonry Wall ◽

Ultimate Bearing Capacity ◽

Masonry Walls ◽

Seismic Capacity ◽

Energy Dissipation Capacity

Masonry structures are widely used in developing countries due to their low cost and simple construction, especially in remote areas, where there are a large number of houses without seismic measures. These buildings are prone to collapse and cause a lot of casualties, even under the action of small earthquakes. For the reinforcement of this structure, a cheap, effective, and easy-to-construct reinforcement method is urgently needed. Therefore, this article studies the reinforcement method of polypropylene bands (PP-bands). We have carried out low-frequency cyclic loading tests for two PP-band reinforced masonry walls and two compared masonry walls. We mainly studied the influence of PP-band and different compressive strengths of plastering mortar on the masonry wall’s seismic capacity. The seismic indicators mainly studied in this article include ultimate bearing capacity, energy dissipation capacity, stiffness degradation, and hysteresis characteristics. The experimental results show that the PP-band can greatly enhance the seismic capacity of the masonry wall. The ultimate bearing capacity, energy dissipation capacity, and displacement ductility of the PP-band reinforced wall are increased by 38%–48%, 22%–47%, and 138%–226%.

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