Study on the Analysis of DX Pile Bearing Capacity and Economic Benefits

2016 ◽  
Author(s):  
Po Lin Chen ◽  
Da-Wei Jian ◽  
Dexin He ◽  
Dave Ta-Teh Chang
Keyword(s):  
Bearing Capacity ◽  
Economic Benefits

scholarly journals Numerical simulation of complex tubular joints of Beijing New Airport Terminal C type column

2019 ◽  
Vol 138 ◽  
pp. 01001
Author(s):  
A Zhang ◽  
G Shangguan ◽  
Yanxia Zhang ◽  
Dinan Shao
Keyword(s):  
Numerical Simulation ◽  
Bearing Capacity ◽  
Failure Modes ◽  
Mechanical Performance ◽  
Simulation Analysis ◽  
Economic Benefits ◽  
Tubular Joints ◽  
Airport Terminal ◽  
Stiffening Ribs ◽  
Final Optimization

The numerical simulation analysis of the two groups of fullscale complex tubular joints of the Beijing New Airport Terminal C type steel column under space static loading tests has been conducted by adopting software ABAQUS. The results obtained from the numerical simulation analysis consistent with those from the tests which enriched the research findings. Based on the research, mechanical performance of the joints has been carried out, the failure modes and ultimate bearing capacity of the joints with no stiffening ribs, three stiffening ribs and five stiffening ribs has been obtained. The numerical simulation results showed that, the bearing capacity of the joints without stiffening ribs were relatively low, the plastic failure of the main pipe was the major form of the destruction and the safety performance were too poor to meet the actual needs of the project. The bearing capacity of the joints significantly improved with the stiffening ribs set inside and the destruction changed to the connection of the main tubular and the branch, which means that the stress of the joints has been obviously improved by the setting of the stiffening ribs and was able to meet the needs of Beijing New Airport Terminal C type column. Through the comparative analysis of the stiffening ribs setting, it can be found that the bearing capacity of the joints were similar between the three and five stiffening ribs, considering the construction difficulty and economic benefits, three stiffening ribs has been selected as the final optimization result.

scholarly journals A 95-Year-Old Concrete Arch Bridge: From Materials Characterization to Structural Analysis

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1744
Author(s):  
Andrzej Ambroziak ◽  
Maciej Malinowski
Keyword(s):  
Mechanical Properties ◽  
Structural Analysis ◽  
Numerical Modelling ◽  
Bearing Capacity ◽  
Laboratory Tests ◽  
Economic Benefits ◽  
Materials Characterization ◽  
Arch Bridge ◽  
Traffic Loads ◽  
Existing Structure

The structural analysis of a 95-year-old concrete arch bridge located in Jagodnik (Poland) is performed in this paper, in order to check its behavior under today’s traffic loads. The mechanical properties of both the concrete and the reinforcement are investigated by testing cores and bar stubs extracted from the bridge. Structural analysis confirms that the bridge meets today’s load requirements in terms of bearing capacity, serviceability state, and that the adopted structural improvements (a new deck slab on top of the existing structure and a layer of mortar to protect the surface of the old concrete) are effective. In this way, the 95-year-old arch bridge was given a new life. The structural improvements show how combining numerical modelling and laboratory tests can contribute to the preservation of an old—though fairly simple—and valuable structure, otherwise destined to demolition, with both environmental and economic benefits.

Finite Element Analysis of Stability Bearing Capacity in Moment Plane of Castellated Steel Components

2014 ◽  
Vol 1065-1069 ◽  
pp. 1191-1194
Author(s):  
Zhen Yu Liang ◽  
Lin Geng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Engineering Design ◽  
Economic Benefits ◽  
Steel Beams ◽  
Element Analysis ◽  
Finite Element Software ◽  
Stability Bearing Capacity ◽  
Analysis Of Stability

Recently, polygon hole castellated steel beams have been studied and applied which had better social and economic benefits. But it brings more difficulties to extend castellated steel components that less studies of castellated bending members. In this essay, ANSYS that is a kind of finite element software had been used to analyze castellated bending members, and characteristics of stability bearing capacity in moment plane of regular hexagon hole castellated steel components had been studied that can provide references to engineering design.

scholarly journals Flexural Performance of Novel Nail-Cross-Laminated Timber Composite Panels

2020 ◽  
Vol 10 (17) ◽  
pp. 5983
Author(s):  
Yannian Zhang ◽  
Moncef L. Nehdi ◽  
Xiaohan Gao ◽  
Lei V. Zhang
Keyword(s):  
Bearing Capacity ◽  
Incidence Angle ◽  
Economic Benefits ◽  
Design Parameters ◽  
Wood Panel ◽  
Cross Laminated Timber ◽  
Flexural Performance ◽  
Connection System ◽  
Potential Applications ◽  
Modified Formula

Cross-laminated timber (CLT) is an innovative wood panel composite that has been attracting growing interest worldwide. Apart from its economic benefits, CLT takes full advantage of both the tensile strength parallel to the wood grain and its compressive strength perpendicular to the grain, which enhances the load bearing capacity of the composite. However, traditional CLT panels are made with glue, which can expire and lose effectiveness over time, compromising the CLT panel mechanical strength. To mitigate such shortcomings of conventional CLT panels, we pioneer herein nail-cross-laminated timber (NCLT) panels with more reliable connection system. This study investigates the flexural performance of NCLT panels made with different types of nails and explores the effects of key design parameters including the nail incidence angle, nail type, total number of nails, and number of layers. Results show that NCLT panels have better flexural performance than traditional CLT panels. The failure mode of NCLT panels depends on the nail angle, nail type, and quantity of nails. A modified formula for predicting the flexural bearing capacity of NCLT panels was proposed and proven accurate. The findings could blaze the trail for potential applications of NCLT panels as a sustainable and resilient construction composite for lightweight structures.

The Application and Analysis of Pressure Grouting Technique on Filling Pile Bottom in Coastal Areas

2011 ◽  
Vol 90-93 ◽  
pp. 2053-2056
Author(s):  
Jin Xu ◽  
Guo Yong Cheng ◽  
Bin Li ◽  
Jing He
Keyword(s):  
Comparative Study ◽  
Bearing Capacity ◽  
Economic Benefits ◽  
Coastal Areas ◽  
Good Effect ◽  
Pressure Grouting ◽  
Tianjin City ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity

Pile grouting technology is widely used in engineering to effectively improve the vertical bearing capacity, in this paper; we made a comparative study on the bearing capacity of grouting pile and General pile in Wuqing district Tianjin City. And proving this method can improve the pile bearing capacity, with good effect, and significant economic benefits.

Research on Mechanical Property and Economic Effect of Contractible Concrete Filled Steel Tube Support

2011 ◽  
Vol 90-93 ◽  
pp. 722-727
Author(s):  
Hui Li ◽  
Bei Jiang ◽  
Bin Yang ◽  
Qi Wang ◽  
Hong Tao Wang ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Bearing Capacity ◽  
Influencing Factor ◽  
Economic Effect ◽  
Soft Rock ◽  
Economic Benefits ◽  
Steel Tube ◽  
Support Effect ◽  
Optimization Analysis ◽  
Concrete Filled Steel Tube

The finite models of U-steel support, grid steel frame, hollow steel tube support and concrete filled steel tube support were established, of which mechanical property and influencing factor such as bearing capacity, support effect etc. was analyzed. Comparative analysis of economic benefit was carried out through research of material dosage and support effect index. The contractible joint for concrete filled steel tube was designed, and their mechanical characteristic was analyzed through test. The results show that the supporting performance of concrete filled steel tube support is related to confinement coefficient. Compared with traditional support, the concrete filled steel tube support has high bearing capacity, intensive later strength, good ductility, various standards and well economic benefits, and in conjunction with contractible joint, it is able to implement functions of quantitatively increasing resistance and yielding. Properly designed through optimization analysis on associated effects, the concrete filled steel tube support can meet supporting demand of deep soft rock and joint broken rock.

scholarly journals Research on Influence Factors of Bearing Capacity of Concrete-Filled Steel Tubular Arch for Traffic Tunnel

Symmetry ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 167
Author(s):  
Lei Li ◽  
Ke Lei
Keyword(s):  
Bearing Capacity ◽  
Influence Factors ◽  
Soft Rock ◽  
Economic Benefits ◽  
Steel Tube ◽  
Underground Engineering ◽  
Supporting Structure ◽  
Geological Conditions ◽  
Traffic Tunnel ◽  
Core Concrete

When a traffic tunnel passes through special strata such as soft rock with high geo-stress, expansive rock, and fault fracture zones, the traditional supporting structure is often destroyed due to complicated loads, which threatens the construction and operation safety of tunnel engineering. Concrete-filled steel tubular (CFST) structure gives full play to the respective advantages of steel and concrete and has better bearing capacity and economic benefits than traditional support structure, which has achieved good results in some underground engineering applications. In order to promote the application of CFST in the construction of traffic tunnels with complex geological conditions and improve the bearing capacity of the initial supporting structure of tunnels, the influencing factors of the bearing capacity of CFST arch were studied by numerical simulation. The main achievements are as follows: (1) The load-displacement curves of CFST members under different material parameters are basically consistent. CFST members have significant restrictions on displacement in the elastic stage and have high ultimate bearing capacity. Although the bearing capacity decreases obviously after reaching the peak, it shows good extension performance. (2) The height of the steel tube section, the thickness of the steel tube wall and the grade of the core concrete have an approximately linear positive correlation with the bearing capacity of CFST arch, but the influence of these three factors on the bearing capacity of CFST arch decreases in turn, and when the grade of core concrete increases above C50, it has no significant effect on the bearing capacity of members.

MARS — Its Tenth Anniversary of Operation and its Future

1980 ◽  
Vol 19 (03) ◽  
pp. 125-132
Author(s):  
G. S. Lodwick ◽  
C. R. Wickizer ◽  
E. Dickhaus
Keyword(s):  
Conceptual Development ◽  
Administrative Support ◽  
Final Section ◽  
Economic Benefits ◽  
Hospital Environment ◽  
Computer Scientist ◽  
University Of Missouri ◽  
Complete Bibliography ◽  
The University ◽  
Economic Considerations

The Missouri Automated Radiology System recently passed its tenth year of clinical operation at the University of Missouri. This article presents the views of a radiologist who has been instrumental in the conceptual development and administrative support of MARS for most of this period, an economist who evaluated MARS from 1972 to 1974 as part of her doctoral dissertation, and a computer scientist who has worked for two years in the development of a Standard MUMPS version of MARS. The first section provides a historical perspective. The second deals with economic considerations of the present MARS system, and suggests those improvements which offer the greatest economic benefits. The final section discusses the new approaches employed in the latest version of MARS, as well as areas for further application in the overall radiology and hospital environment. A complete bibliography on MARS is provided for further reading.

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