scholarly journals CYCLIC HORIZONTAL LOAD TEST OF PHC PILES WITH EARTHQUAKE RESISTANT JOINT UNDER AXIAL FORCE CHANGING CONDITION

1998 ◽  
Vol 63 (513) ◽  
pp. 105-111 ◽  
Author(s):  
Yoshihiro SUGIMURA ◽  
Kenichi SASAKI ◽  
Hirokazu SATOU ◽  
Tatsuo SASAKI
Keyword(s):  
Axial Force ◽  
Load Test ◽  
Horizontal Load ◽  
Earthquake Resistant

scholarly journals USED TIRE AS BASE ISOLATOR TIRE FOR EARTHQUAKE RESISTANT HOUSES

2011 ◽  
Vol 7 (1) ◽  
pp. 37
Author(s):  
Inggemar Särfors
Keyword(s):  
Base Isolation ◽  
Load Ratio ◽  
Earthquake Resistance ◽  
Horizontal Load ◽  
Hydraulic Jack ◽  
Earthquake Energy ◽  
Base Isolator ◽  
Earthquake Resistant ◽  
Earthquake Load ◽  
Better Than

The investigation of foundation on tires for absorbing the earthquake energy on houses structure is described here. The foundations are cut cone in shape. There are two tests have been conducted to investigate the shaking energy absorption. First, the foundation is placed on the sand filled tire. The second one, the double tires support round foundation. For comparison purpose, the foundation on sand test without tire is also conducted. The laboratory tests are performed using double hydraulic jack to generate the applied loads. The first jack is used to give the vertical load on the top of foundation to simulate the house load. The other jack is used to produce the load in the horizontal direction to replicate the earthquake load. The results of the tests are plotted in the terms of horizontal load and displacement corves. The double tires foundation shows the higher horizontal displacement-load ratio compared to the others. It indicates that the double tire based foundation absorbing the earthquake energy better than the others. It is concluded that the tired based foundation can be installed to support in the earthquake resistant houses. Keywords: foundation, earthquake resistance, base isolation

Comparison of pile load test methods

1989 ◽  
Vol 26 (4) ◽  
pp. 742-744 ◽  
Author(s):  
R. C. Joshi ◽  
H. D. Sharma ◽  
D. G. Sparrow
Keyword(s):  
Axial Force ◽  
Applied Load ◽  
Ultimate Load ◽  
Axial Loading ◽  
Test Methods ◽  
Point Load ◽  
Load Test ◽  
Force Distribution ◽  
Loading Test ◽  
Shaft Resistance

Instrumented model piles were loaded to failure using slow-maintained-load, quick-maintained-load, and constant-rate-of-penetration methods of loading. The piles were driven in a prepared dry-sand bed. The applied load, point load, and shaft resistance were measured using load cells and strain gauges, and axial force distribution was determined. Test data indicate that all the three methods give similar ultimate load at failure. Nonetheless, out of the three methods, the slow-maintained-load method of testing piles, which seems to simulate field conditions, gives the largest settlement for the same applied load. The axial force distribution and shaft resistance along the pile were observed to be identical for all the three pile test methods. Key words: model piles, laboratory study, axial loading, test methods, sands, point load, shaft resistance, ultimate load.

Effect of Jointing Sand Sizes and Width on Horizontal Displacement of Concrete Block Pavement

2014 ◽  
Vol 71 (3) ◽  
Author(s):  
Nur Hidayah A.H. ◽  
Hasanan Md Nor ◽  
Azman M.
Keyword(s):  
Load Distribution ◽  
Laboratory Tests ◽  
Frictional Resistance ◽  
Concrete Block ◽  
Horizontal Displacement ◽  
Load Test ◽  
Horizontal Load ◽  
Joint Width ◽  
Research Studies

This research studies the performance of Concrete Block Pavement (CBP) through the load distribution between the blocks and the jointing sand. Presence of jointing sand in joint provides frictional resistance to prevent the blocks from displaced or moved when the load is applied. Three different sizes of jointing sand (less than 2 mm, 5 mm and 7 mm) with three different jointing widths (2 mm, 4 mm and 6 mm) were used. Laboratory tests were conducted using horizontal load test to compare and investigate the effect by using different jointing sand sizes with different joint widths on the performance of concrete block pavement. It was found that the wider joint width requires coarse jointing sand for good performance of concrete block pavement. Results show that at 2 mm jointing width, it is more appropriate to use jointing sand with a size less than 2 mm and at a 6 mm jointing width it is better to use jointing sand with a size less than 7 mm. It seems to give better results in resisting the horizontal load that been applied before the blocks starts to displace and the pavement failed.

Bearing Capacity of Concrete-Cored DCM Pile Composite Ground

2013 ◽  
Vol 712-715 ◽  
pp. 951-954
Author(s):  
Wang Chi ◽  
Yong Fu Xu ◽  
Ping Dong
Keyword(s):  
Bearing Capacity ◽  
Axial Force ◽  
Field Tests ◽  
Load Test ◽  
Composite Foundation ◽  
Plate Load Test ◽  
Concrete Pile ◽  
Composite Pile ◽  
Composite Ground ◽  
Surrounding Soil

The concrete-cored DCM pile is an kind of composite pile by inserting the inner concrete pile into the DCM column socket. In two test sites, plate load test is used to measure bearing capacity of concrete-cored DCM pile composite ground. Vertical stress of surrounding soil and DCM column socket are measured by pressure cells. The axial force of precast core pile can be obtained by steel stressmeters which welded on the reinforcing steel along depth. The field tests results show that, the bearing capacity of concrete-cored DCM pile composite ground is much larger than that of original soil. The development degree of concrete-cored DCM pile bearing capacity in composite foundation increases steadily during the loading process. Both concrete-cored DCM piles and surrounding soils play an important effect on the bearing capacity of composite foundation.

Experimental Research on Statnamic Load Test of Long Rock Socket Bored Pile

2014 ◽  
Vol 501-504 ◽  
pp. 96-100
Author(s):  
Deng Feng Sang ◽  
Lin Wang Su ◽  
Zhan Wang ◽  
De Yin Tan
Keyword(s):  
Bearing Capacity ◽  
Experimental Research ◽  
Axial Force ◽  
Load Test ◽  
Test Method ◽  
Pile Capacity ◽  
Bored Pile ◽  
Result Show ◽  
Shaft Friction ◽  
Test Result

Through the Statnamic load test on working bored pile, the displacement of pile top and the distributing of axis force along the bored pile were brought forward and two methods were used for interpretation the test result. The bearing capacity, axial force, shaft friction and pile toe resistance of pile were all illustrated. The result show that the Statnamic load test method can check the pile capacity quite easily, it is quite difficult to test the ultimate pile capacity.

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