On-Site In-Suit Test Research of Horizontal Bearing Capacity on Inclined Steel Pipe Piles

2011 ◽  
Vol 261-263 ◽  
pp. 1594-1597
Author(s):  
Zhao Qing Zhu ◽  
Wei Ming Gong
Keyword(s):  
Bearing Capacity ◽  
Inclination Angle ◽  
Horizontal Displacement ◽  
Test Method ◽  
Steel Pipe ◽  
In Situ Tests ◽  
Loading Test ◽  
Inclination Angles ◽  
Cycle Loading ◽  
The One

The in-situ tests of horizontal bearing capacity on inclined steel pipe piles were conducted in the sea near Shanghai. Based on the field experiment with the lateral unidirectional and single cycle loading test method, this document presents the horizontal displacement and bearing capacity on the inclined steel pipe piles with negative and positive inclination angles. And the horizontal bearing capacity of the steel pipe pile with positive inclination angle is larger than the one with negative inclination angle. And the tests results can be provided for similar engineering reference.

Analysis of Collected Heat by Solar Collectors Fixed on the Outside Wall of Balcony

2011 ◽  
Vol 219-220 ◽  
pp. 633-637
Author(s):  
Li Xi Zhang ◽  
Shi Yuan Gao ◽  
Qing Yuan He ◽  
He Fei Zhang
Keyword(s):  
Water Temperature ◽  
Inclination Angle ◽  
Total Heat ◽  
Solar Collectors ◽  
The South ◽  
Extra Energy ◽  
South Wall ◽  
Inclination Angles ◽  
The One

It is studied the collected heat by collectors fixed on the outside wall of balconies when the shape and direction of balconies, and inclination angle of collectors are changed. Total heat collected by three walls of the rectangle balcony toward southeast or southwest is more than the one collected under other conditions. Total heat collected by rectangle balcony toward south would be increased when the inclination angles β of collectors are reduced. As β=70°, and the collectors were installed only on the south wall, to make water temperature above 60 °C in 150 L tank, extra energy needed is equivalent to 46.5 kg/a standard coal; if collectors were installed outside three walls of balcony, extra energy is not needed.

Modeling of the Plane Needle Cutting Edge Rake and Inclination Angles for Biopsy

2010 ◽  
Vol 132 (5) ◽  
Author(s):  
Jason Z. Moore ◽  
Qinhe Zhang ◽  
Carl S. McGill ◽  
Haojun Zheng ◽  
Patrick W. McLaughlin ◽  
...  
Keyword(s):  
Inclination Angle ◽  
Needle Biopsy ◽  
Bovine Liver ◽  
Rake Angle ◽  
Plane Symmetric ◽  
Cutting Geometry ◽  
Inclination Angles ◽  
The One ◽  
Cutting Point ◽  
Very High

Hollow needles are one of the most common medical devices, yet little study has focused on the needle tip cutting geometry for biopsy, which is a tissue cutting process. This research develops mathematical models to calculate the inclination and rake angles along cutting edges on needle tips generated by planes. Three types of plane needle tips, the one-plane bias bevel, multi-plane symmetrical, and two-plane nonsymmetric needles, are investigated. The models show that the leading tip of a bias bevel needle has an inclination angle of 0 deg, the worst configuration for cutting. Symmetric multiplane needles on the other hand have very high inclination angles, 60, 56.3, and 50.8 deg, given a needle formed by two-, three-, and four-plane, respectively, for a bevel angle of 30 deg and can assist more effective needle biopsy. The rake angle is at its greatest value (the best configuration for cutting), which equals the 90 deg minus the bevel angle, at the initial cutting point for the bias bevel needle. Experiments are performed using three 11 gauge two-plane symmetric needles with 20, 25, and 30 deg bevel angles on bovine liver and demonstrate that the needle tip geometry affects biopsy performance, where longer biopsy samples are collected with needles of higher rake and inclination angle.

scholarly journals Analysis of Carrying Capacity of the Bored Pile Foundation in Cibubur Transpark Project

2020 ◽  
Vol 2 (3) ◽  
pp. 63-68
Author(s):  
Arif Sanjaya ◽  
Resi Aseanto
Keyword(s):  
Bearing Capacity ◽  
Carrying Capacity ◽  
Pile Foundation ◽  
Tall Buildings ◽  
Test Method ◽  
Test Results ◽  
Loading Test ◽  
Bored Pile ◽  
Ultimate Carrying Capacity ◽  
Spt Data

The foundation is a construction that continues the burden of the upper structure and passes it on to the soil below it. A bored pile foundation is now an option in working on structures in densely populated areas and tall buildings. The purpose of this study is to calculate and compare the carrying capacity of the bored pile foundation based on N-SPT data with the O 'Neil & Reese, and Reese & Wright methods, while the Loading test data with the interpretation of the Davisson method and the Mazurkiewicz method. The results of calculations based on N-SPT data, the average ultimate carrying capacity of the foundation with the O’neil & Reese method of 1211.61 tons, Reese & Wright of 1235.02 tons. While the Interpretation of Loading test method for Marzukiewicz is 1267.00 tons, Davisson is 850.40 tons, and the carrying capacity of PDA test results is 121.72 tons. From the calculation of the bearing capacity of the consecutive foundation of the smallest is the Davisson method, the O'neil & Reese method, the PDA test method, the Reese & Wright method, and finally the Mazurkiewicz method.

scholarly journals A study on the vertical bearing capacity according to the inclination angle of single batter piles and the relative density of sand under vertical loads

2021 ◽  
Vol 21 (3) ◽  
pp. 133-140
Author(s):  
Seong-Kyu Yun ◽  
Jiseong Kim ◽  
Minsu Kang ◽  
Gichun Kang
Keyword(s):  
Bearing Capacity ◽  
Relative Density ◽  
Inclination Angle ◽  
Sandy Soil ◽  
Vertical Load ◽  
Inclination Angles ◽  
Vertical Bearing ◽  
Relative Density Of Sand ◽  
Batter Piles ◽  
Vertical Bearing Capacity

This study analyzed the increase in the compressive bearing capacity of single-sloped piles according to the relative density and inclination angle when the batter piles are subjected to a vertical load in non-adhesive sand. An experiment was conducted with inclination angles of 0, 10, 20, 30, and 40, and the relative density of sandy soil was divided into 31% (loose), 53% (medium), and 72% (dense) and compared with the results of the earlier research. As a result of the experiment, when the relative density of the ground was medium and dense, the bearing capacity was greater than that of the vertical pile (0°) at all angles. The tendency noted was that the bearing capacity of the pile increased from vertical to 20° and gradually decreased after 20°. The same tendency was also exhibited by loose sandy soil, but with less bearing capacity than the vertical pile (0°) except for 20°.

scholarly journals Behavior of a strip footing on reinforced soil subjected to inclined load

2018 ◽  
Vol 162 ◽  
pp. 01022
Author(s):  
Jawdat Abbas
Keyword(s):  
Bearing Capacity ◽  
Relative Density ◽  
Experimental Model ◽  
Inclination Angle ◽  
Sandy Soil ◽  
Horizontal Displacement ◽  
Reinforced Soil ◽  
Strip Footing ◽  
Inclined Load ◽  
Supporting Soil

This study investigates the behavior of a strip footing under inclined load on reinforced sandy soil by using experimental model. The effect of the load inclination angle (α), number of geogrid layers (N) and the relative density (RD) on the bearing capacity, settlement and horizontal displacement were studied. The results showed that by increasing the number of reinforcement layers (N), the bearing capacity increased, but there is an optimum value (N=4-5) depending on relative density of supporting soil. Also the settlement and horizontal displacement of footing decreasing with increase number of reinforcement layers.

scholarly journals The effect of the stress distribution of anchorage and stress in the textured layer on the durability of new anchorages

2020 ◽  
Vol 10 (1) ◽  
pp. 705-711
Author(s):  
Dariusz Tomaszewicz ◽  
Agnieszka Jablonska-Krysiewicz ◽  
Jerzy K. Szlendak
Keyword(s):  
Stress Distribution ◽  
Bearing Capacity ◽  
Inclination Angle ◽  
Shear Stresses ◽  
Inclination Angles ◽  
Different Diameters ◽  
Structural Layer ◽  
Traction Stress

AbstractThe paper estimated the effect of the distribution of edge and shear stresses occurring in the façade texture layer of three-layer walls of large slab panel buildings, as well as the variability of these stresses depending on the anchorage strength of the anchorage. Bonded anchors with seven different diameters M8 ÷ M30, selected based on catalogues, were analysed. The traction stress was determined based on the destructive force, which is determined by the catalogues of manufacturers of bonded anchors. Depending on the choice of the method of repairing the connections between the textured layer and the structural layer, we give the three-layer walls a new character of work. One of the methods of strengthening the textured layer is the popular COPY-ECO system in Poland. It is a system of two anchors (horizontal and diagonal), reflecting the shape of the work of existing hangers. The article also analyses the variants of oblique anchorages for the M12 anchor with inclination angles of 30∘, 45∘ and 60∘. The extent to which the anchorage inclination angle has been assessed influences the higher parameters of the anchor’s bearing capacity due to the shearing of the textured layer.

Experiment Research on Seismic Performance of Framework Joint Connected with Strengthening Planting Bar

2015 ◽  
Vol 744-746 ◽  
pp. 88-92
Author(s):  
Li Juan Song ◽  
Yu Guo Liang ◽  
Li Feng Shi
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Seismic Performance ◽  
Paper Study ◽  
Experiment Research ◽  
Loading Test ◽  
Reversed Loading ◽  
The One ◽  
Better Than

This issue conducted the low cyclic reversed loading test of 3 groups of framework joints formed by inorganic anchorage materials and 1 group of the one formed by integral concreting. This paper study the seismic performance, analyzed the hysteretic curve, bearing capacity, ductility and the capacity of energy dissipation of the framework joints. The conclusion can be obtained that the bearing capacity of framework joints connected with strengthening planting bar are better than the ordinary joints. The ductility and seismic performance are good.

The Test Analysis of the Bearing Capacity of Foundation

2014 ◽  
Vol 962-965 ◽  
pp. 357-360
Author(s):  
Ya Jun Yin ◽  
Xue Wen Xie ◽  
Yong Mei Qian
Keyword(s):  
Bearing Capacity ◽  
Standard Penetration Test ◽  
Test Methods ◽  
Test Point ◽  
Load Test ◽  
Test Method ◽  
Penetration Test ◽  
Loading Test ◽  
Test Analysis ◽  
Foundation Soil

The test method of shallow plate load was used in the bearing capacity of foundation of Yushu City , doing two groups of loading test in different depths and doing survey and comparative test between test point nearby and sites in the same horizon.It gets the law of foundation soil bearing capacity value got by different test methods and provides the basis for Jilin Province to establish the local standards through the comparison of load test and geotechnical test , static cone penetration test and standard penetration test.

Effect of Pile and Load Inclination on the Pile Resistance In both Compression and Tension

2014 ◽  
Vol 2 (1) ◽  
pp. 11-29
Author(s):  
Ahmad Jabber Hussain ◽  
Alaa Dawood Salman ◽  
. Nazar Hassan Mohammad
Keyword(s):  
Bearing Capacity ◽  
Inclination Angle ◽  
Theoretical Study ◽  
Pile Installation ◽  
Soil Failure ◽  
Inclined Pile ◽  
Uplift Resistance ◽  
Lift Forces ◽  
Batter Piles ◽  
Pile Resistance

      According to this theoretical study which was about loading of piles under different condition of loading (compression and up-lift forces ) and for deferent pile installation (vertical and inclined pile ) by which it called (positive batter pile ) when the inclination of the load and pile is in the same direction and called (negative batter pile) when the inclination of load is opposite to the pile inclination, and from studying these cases the results of analysis can be summarize in the flowing points: 1-Variation of load inclination on piles effects on the bearing capacity and uplift resistance. It was found that bearing capacity of the piles increase with increasing of load inclination up to the inclination angle (37.5ͦ) which represents the maximum bearing capacity and then the bearing capacity decrease with increasing of load inclination. 2- Variation of batter pile affects the bearing capacity of the pile and up-lift resistance. by which equivalent angle will be used as result between the load and piles inclination and this angle will be used in calculation of piles resistance . 3- It was noticed the shape of soil failure is highly affected by the inclination of pile. The shape of failure for the soil which is in contact with pile and this include (vertical and batter piles) is highly affected by the angle of inclination.

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