Tilt Table Test for Interface Shear Resistance Between Flowlines and Soils

This paper describes a tilt table test method for measuring the shear resistance between flowlines and supporting soils. This shear resistance is important in considering buckling and walking in the design of flowlines. A significant challenge in measuring the shear resistance is the very low effective normal stresses that exist at the interface in field conditions. Since the measured stresses will be small, even small amounts of friction in a test device can adversely affect the results. The tilt table method overcomes this problem by using gravity to apply the normal and shear stresses to the soil-flowline interface, eliminating the need for a mechanical loading system. A set of test results is presented to demonstrate how the test method can be used to measure the resistance between the flowline and the soil. These results illustrate that the type of flowline coating and the effective normal stress affect the shear resistance.

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F54. Food intake can significantly influence tilt table test results in patients with postural orthostatic tachycardia syndrome

Clinical Neurophysiology ◽

10.1016/j.clinph.2018.04.217 ◽

2018 ◽

Vol 129 ◽

pp. e86-e87

Author(s):

Luka Crnošija ◽

Berislav Ruška ◽

Magdalena Krbot Skorić ◽

Ivan Adamec ◽

Mario Habek

Keyword(s):

Food Intake ◽

Postural Orthostatic Tachycardia Syndrome ◽

Test Results ◽

Tilt Table Test ◽

Tilt Table

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Test Method for Determining the Internal and Interface Shear Resistance of Geosynthetic Clay Liner by the Direct Shear Method

10.1520/d6243 ◽

1900 ◽

Author(s):

Keyword(s):

Shear Resistance ◽

Test Method ◽

Direct Shear ◽

Interface Shear ◽

Geosynthetic Clay Liner ◽

Clay Liner

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Randomized double-blind, placebo-controlled trial of oral atenolol in patients with unexplained syncope and positive upright tilt table test results

American Heart Journal ◽

10.1016/0002-8703(95)90150-7 ◽

1995 ◽

Vol 130 (6) ◽

pp. 1250-1253 ◽

Cited By ~ 113

Author(s):

Nithi Mahanonda ◽

Kiertijai Bhuripanyo ◽

Charuwan Kangkagate ◽

Kanchana Wansanit ◽

Bang-on Kulchot ◽

...

Keyword(s):

Controlled Trial ◽

Test Results ◽

Tilt Table Test ◽

Tilt Table ◽

Double Blind ◽

Double Blind Placebo ◽

Unexplained Syncope ◽

Upright Tilt

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Effect of Wetting on the Pullout Resistance of Grouted Soil Nails

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.1304 ◽

2012 ◽

Vol 226-228 ◽

pp. 1304-1307

Author(s):

Jason Y. Wu ◽

Jr Min Chang

Keyword(s):

Fine Sand ◽

Shear Resistance ◽

Test Results ◽

Pullout Capacity ◽

Interface Shear ◽

Soil Nails ◽

Soaking Time ◽

Pullout Resistance ◽

Soil Nail ◽

Pullout Tests

In this research, laboratory pullout tests were conducted on grouted soil nails to study the effect of wetting on the interface shear resistance between nail and soil during pullout. Deformed bars with equal size to the true soil nails were used as model nails. The soil used was silty fine sand collected at the site and prepared to a very dense condition. Rainfall infiltration was simulated using duplicated soil nails inundated by water for different periods. Test results indicated that the peak pullout resistance strongly decreases upon wetting, with a reduction of about 60% after soaking for 28 days. However, the experiments showed that there is a threshold water content (or soaking time) beyond which the effect of infiltration on the pullout resistance is reduced. The laboratory protocols developed in this study offered an easy scheme for the prediction of the pullout capacity of a grouted soil nail upon wetting.

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Repeatability of the Tilt-Table Test Method

10.4271/930832 ◽

1993 ◽

Cited By ~ 2

Author(s):

C. B. Winkler ◽

S. E. Bogard ◽

K. E. Campbell

Keyword(s):

Test Method ◽

Tilt Table Test ◽

Tilt Table

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Development and Application of Test Apparatus for Cutting Performance of Cutters of Large Excavation Equipment

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.670-671.497 ◽

2014 ◽

Vol 670-671 ◽

pp. 497-501

Author(s):

Peng Lei Wang ◽

Yi Min Xia ◽

Tao Ouyang ◽

Lu Tang ◽

Ben Guo

Keyword(s):

Test System ◽

Test Method ◽

Cutting Performance ◽

Coupling Mechanism ◽

Test Apparatus ◽

Vertical Loading ◽

System A ◽

Laboratory Test Method ◽

Loading System ◽

Physical Phenomena

In order to study the physical phenomena and mechanical properties of cutters when cutting rock, a test apparatus for cutting performance of cutters of large excavation equipment is established. The test apparatus is composed of a vertical loading system, a rotary loading system, a control system and a test system. Tests of different cut penetrations and spacings were carried out using the test apparatus. Meanwhile, the real-time images of the cutting process and forces acting on the cutters were obtained. The result shows that the test apparatus has good practicality and reliability, and it provides a laboratory test method to study the cutter-rock coupling mechanism and cutting performance of cutters.

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