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The convexity about ultimate bearing hypersurfaces of structures

Chengxi GUO,Tingting GUO

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4,   Pages 456-461 doi: 10.1007/s11709-016-0334-1

Abstract: The relationship between the convexity on the ultimate bearing surface of a structure and the second-orderwhen the Hessian matrix composed of the second-order partial derivatives on the hypersurface about the ultimatebearing of the structure is negative definite.Some applications in the analysis of bearing capacity of structures were illustrated with examples.on the basis of several points on the surface of the ultimate bearing of the structure.

Keywords： service     limit load     ultimate bearing surface     convexity     generalized force     generalized displacement     frame    

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The application of DX piles in the LNG storage tanks

He Dexin,Zhang Chengwei,Zheng Jianhua,He Jiantong and Zhang Xinsheng

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 19-25

Abstract: The purpose is to determine the ultimate bearing capacities and settlement of piles, analyze its loadComparing DX piles with straight piles, we find that DX piles are superior in ultimate bearing capacities

Keywords： DX piles     skin friction resistances     tip resistances     ultimate bearing capacities     settlement    

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Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound

Mantu MAJUMDER, Debarghya CHAKRABORTY

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 537-551 doi: 10.1007/s11709-021-0708-x

Abstract: The bearing and uplift capacities of under-reamed piles are estimated through non-dimensional factorsThe results of this study are expected to be useful for the estimation of the bearing and uplift capacities

Keywords： bearing capacity     uplift capacity     under-reamed pile     clay     limit analysis    

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Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1016-1024 doi: 10.1007/s11709-021-0751-7

Abstract: investigated the use of recycled tire-derived aggregate (TDA) mixed with kaolin as a method of increasing the ultimatebearing capacity ( UBC) of a strip footing.

Keywords： kaolin     physical modeling tests     stabilization     numerical modeling    

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The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints

Shaochun WANG, Xi JIANG, Yun BAI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1200-1213 doi: 10.1007/s11709-019-0546-2

Abstract: Special attention is paid to failure mode and structural performance (bearing capacity, deformation,The segment joint with MSSF shows higher ultimate bearing capacity and toughness compared to segment

Keywords： shield tunneling     structural synthetic fiber concrete     hand hole     segment joint     ultimate bearing capacity    

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Modeling limit force capacities of high force to volume lead extrusion dampers

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 609-622 doi: 10.1007/s11709-021-0724-x

Abstract: Small volumetric sizes and high force capacities define high-force-to-volume (HF2V) devices, which canHowever, the design of such devices for specific force capacities has proven difficult based on the complexities

Keywords： extrusion     lead dampers     upper and lower bound     analytical modelling     limit force    

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Numerical analysis for castedinplace DX pile groups

Wan Fei,Zhang Dehua

Strategic Study of CAE 2012, Volume 14, Issue 1,   Pages 46-50

Abstract: Analysis of the influence of pile spacing and plate arrangement to ultimate bearing capacity and settlementcontrol, and comparison of the ultimate bearing capacity of straight pile group with 8 piles with theThe result indicates that the pile of DX pile group has the same bearing mechanism with the DX singleThe displacement of the soil below the bearing plate is greater than that above the bearing plate, whichThe ultimate bearing capacity of DX pile group with 6 piles is as 1.27 times as the straight pile group

Keywords： pile foundation     ultimate bearing mechanism     numerical analysis     DX pile group    

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Effect of variable heat capacities on performance of an irreversible Miller heat engine

Xingmei YE

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 280-284 doi: 10.1007/s11708-012-0203-0

Abstract: Based on the variable heat capacities of the working fluid, the irreversibility coming from the compressionMoreover, the influence of the compression and expansion efficiencies, the variable heat capacities and

Keywords： Miller cycle     variable heat capacity     irreversibility     parametric optimization    

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Combination of biomaterial transplantation and genetic enhancement of intrinsic growth capacities to

Bin Yu, Xiaosong Gu

Frontiers of Medicine 2019, Volume 13, Issue 2,   Pages 131-137 doi: 10.1007/s11684-018-0642-z

Abstract: The inhibitory environment that surrounds the lesion site and the lack of intrinsic regenerative capacity of the adult mammalian central nervous system (CNS) impede the regrowth of injured axons and thereby the reestablishment of neural circuits required for functional recovery after spinal cord injuries (SCI). To circumvent these barriers, biomaterial scaffolds are applied to bridge the lesion gaps for the regrowing axons to follow, and, often by combining stem cell transplantation, to enable the local environment in the growth-supportive direction. Manipulations, such as the modulation of PTEN/mTOR pathways, can also enhance intrinsic CNS axon regrowth after injury. Given the complex pathophysiology of SCI, combining biomaterial scaffolds and genetic manipulation may provide synergistic effects and promote maximal axonal regrowth. Future directions will primarily focus on the translatability of these approaches and promote therapeutic avenues toward the functional rehabilitation of patients with SCIs.

Keywords： spinal cord injury     biomaterial     extrinsic barrier     intrinsic regeneration capacity    

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Numerical investigation of the ultimate lateral resistance of piles in soft clay

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2,   Pages 194-200 doi: 10.1007/s11709-014-0251-0

Abstract: The determination of the ultimate soil resistance from the results of the finite element analyses aimsat providing the estimation of a range of values for the ultimate soil resistance coefficient with

Keywords： laterally loaded     pile     soft clay     p?y curves     finite element method (FEM)    

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Parametric analysis and design equation of ultimate capacity for unstiffened overlapped CHS K-joints

CHEN Yu, ZHAO Xianzhong, CHEN Yiyi

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 107-115 doi: 10.1007/s11709-008-0014-x

Abstract: unstiffened, overlapped circular hollow structure (CHS) K-joints was generated and validated by comparing the ultimatecapacities, deformation processes and failure modes of the experimental results.geometric parameters, with or without hidden welds, and the loading hierarchy reversal of braces on the ultimateIt was also found that the absence of hidden welds has less significance on the ultimate capacity ofFinally, based on the design equation of gap joints, a formula predicting the ultimate capacity of overlapped

Keywords： regression analysis     consistent     unstiffened     plasticity     overlapped    

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Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0725-z

Abstract: techniques, the energy operator (EO) and its variants have received considerable attention in the field of bearingTo address these issues, this paper presents a novel EO fusion strategy for enhancing the bearing faultand experimental verifications confirm that the proposed strategy is more effective for enhancing the bearing

Keywords： higher order energy operator     fault diagnosis     manifold learning     rolling element bearing     information    

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New analysis model for rotor-bearing systems based on plate theory

Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 461-473 doi: 10.1007/s11465-019-0525-2

Abstract: The purpose of this work is to develop a new analysis model for angular-contact, ball-bearing systemsThe new analysis model is suitable for static and modal analyses of rotor-bearing systems.

Keywords： rotor-bearing system     rolling element bearing     plate theory     finite element analysis    

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API-based assessment on urban air environment bearing capability in China

Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1049-1055 doi: 10.1007/s11783-014-0662-0

Abstract: By using this new method, the air environmental bearing capability of 333 cities at the prefecture levelThe results show that of the 333 cities 9.6% is of high bearing capability, 34.5% relatively high bearingcapability, 52.6% medium bearing capability, 2.7% low capability, and 0.6% is of weak bearing capability; in terms of regional distribution, the western region is of relatively high air environment bearingChengdu-Chongqing agglomerations are of relatively high carrying capacity while other agglomerations are of medium bearing

Keywords： air pollution index (API)     air environment bearing capability     key city     assessment method    

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Foundations bearing capacity subjected to seepage by the kinematic approach of the limit analysis

Mehdi VEISKARAMI, Ghasem HABIBAGAHI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 446-455 doi: 10.1007/s11709-013-0227-5

Abstract: An estimate of the ultimate load on foundations on soil layers subject to groundwater flow has been presentedThe kinematic approach of the limit analysis was employed to find the upper-bound limit of the bearingIt was found that the bearing capacity has a decreasing trend with increase in the groundwater flow gradientand hence, a reduction factor has been introduced to the third term in the bearing capacity equation

Keywords： foundation     bearing capacity     limit analysis     numerical computation     plasticity     seepage    

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Title Author Date Type Operation

The convexity about ultimate bearing hypersurfaces of structures

Chengxi GUO,Tingting GUO

Journal Article

The application of DX piles in the LNG storage tanks

He Dexin,Zhang Chengwei,Zheng Jianhua,He Jiantong and Zhang Xinsheng

Journal Article

Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound

Mantu MAJUMDER, Debarghya CHAKRABORTY

Journal Article

Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Journal Article

The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints

Shaochun WANG, Xi JIANG, Yun BAI

Journal Article

Modeling limit force capacities of high force to volume lead extrusion dampers

Journal Article

Numerical analysis for castedinplace DX pile groups

Wan Fei,Zhang Dehua

Journal Article

Effect of variable heat capacities on performance of an irreversible Miller heat engine

Xingmei YE

Journal Article

Combination of biomaterial transplantation and genetic enhancement of intrinsic growth capacities to

Bin Yu, Xiaosong Gu

Journal Article

Numerical investigation of the ultimate lateral resistance of piles in soft clay

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

Journal Article

Parametric analysis and design equation of ultimate capacity for unstiffened overlapped CHS K-joints

CHEN Yu, ZHAO Xianzhong, CHEN Yiyi

Journal Article

Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Journal Article

New analysis model for rotor-bearing systems based on plate theory

Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA

Journal Article

API-based assessment on urban air environment bearing capability in China

Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU

Journal Article

Foundations bearing capacity subjected to seepage by the kinematic approach of the limit analysis

Mehdi VEISKARAMI, Ghasem HABIBAGAHI

Journal Article