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Ductility improvement of GFRP-RC beams using precast confined concrete block in compression zone

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0968-8

Abstract: A control beam and four beams with different PCCBs were cast and tested under four-point bending conditions

Keywords： ductility     four-point bending test     glass fiber-reinforced polymer     precast confined concrete block    

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Consumption of carbon fiber plates in the reinforced concrete beams strengthened with CFPs

BU Liangtao, SHI Chuxian, SONG Li

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 393-398 doi: 10.1007/s11709-007-0053-8

Abstract: Four-point bending flexural tests were conducted to one full-size reinforced concrete (RC) beam and three

Keywords： flexural     full-size     Four-point     consumption     experimental    

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Experimental study on mechanical properties of a novel micro-steel fiber reinforced magnesium phosphate cement-based concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1047-1057 doi: 10.1007/s11709-021-0755-3

Abstract: development curve, fluidity, cubic compressive strength, modulus of elastic, axial compressive strength, and four-pointflexural strength were experimentally studied with 192 specimens, and a scanning electron microscopy (SEM) testBased on the test results, the correlations between the cubic compressive strength and curing age, theMSF had no apparent influence on the compressive strength, while it enhanced the four-point flexuralThe four-point flexural strength of specimens with MSF volume fraction from 0.25% to 0.75% were 12.3%

Keywords： magnesium phosphate cement-based concrete     micro-steel fibers     four-point flexural strength     compressive    

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3D fracture modelling and limit state analysis of prestressed composite concrete pipes

Pengfei HE, Yang SHEN, Yun GU, Pangyong SHEN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 165-175 doi: 10.1007/s11709-018-0484-4

Abstract: In this manuscript, we study fracture of prestressed cylindrical concrete pipes. Such concrete pipes play a major role in tunneling and underground engineering. The structure is modelled fully in 3D using three-dimensional continuum elements for the concrete structure which beam elements are employed to model the reinforcement. This allows the method to capture important phenomena compared to a pure shell model of concrete. A continuous approach to fracture is chosen when concrete is subjected to compressive loading while a combined continuous-discrete fracture method is employed in tension. The model is validated through comparisons with experimental data.

Keywords： structures     limit state analysis     3D fracture modelling     prestressed composite pipes     reinforced concrete     three-pointbending test    

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Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Frontiers of Structural and Civil Engineering   Pages 1033-1046 doi: 10.1007/s11709-023-0973-y

Abstract: This study focuses on the bending failure performance of a shield tunnel segment.A full-scale test was conducted to investigate deformation and failure characteristics.During the loading, the bending failure process can be divided into four stages: the elastic stage, workingA numerical model corresponding to the test was established using the elastoplastic damage constitutiveAfter a comparative analysis of the simulation and test results, parametric studies were performed to

Keywords： shield tunnel     bearing capacity     failure mechanism     segment reinforcement    

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The Loading Capacity of Three Point Bending BeamWith the Resistant Force of Cohesive Crack

Wang Limin,Xu Shi ,Ren Chuanbo

Strategic Study of CAE 2007, Volume 9, Issue 2,   Pages 30-35

Abstract: crack and ultimate tension stress.Through the double-K fracture criterion and fracture model of three pointbending beam, the effect of crack cohesive force on the fracture process is analyzed.For maximum loadingof bending beam with crack,the calculation approach is presented and the results are well fitted with

Keywords： cohesive crack     three point bending beam     concrete     double唱K fracture parameters     structureloading capacity    

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The Double-K Fracture Parameter of Concrete for Non-Standard Three Point Bending Beam Specimens

Wu Zhimin,Xu Shilang,Ding Yining,Lu Xijing,Liu Jiayi,Ding Sheng gen

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 76-81

Abstract:

Using the non-standard three-point bending beam specimens of concrete, which have the span/ heightIC and the critical crack tip opening displacement CTODc for the non-standard three pointbending beams with different initial crack lengths and different spcimen heights are determined utilizing

Keywords： concrete     three-point bending beam     fracture parameter    

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Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete railway sleepers

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 411-428 doi: 10.1007/s11709-023-0928-3

Abstract: Under European standards, 35 UHPFRC sleepers are subjected to static bending tests at the center and

Keywords： pre-stressed concrete sleeper     ultrahigh performance fiber-reinforced concrete     pull-out test     staticbending test     steel fiber     aspect ratio     volume fraction    

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A new meshless approach for bending analysis of thin plates with arbitrary shapes and boundary conditions

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 75-85 doi: 10.1007/s11709-021-0798-5

Abstract: An efficient and meshfree approach is proposed for the bending analysis of thin plates.coefficients of deflection expression could be determined through boundary conditions by using a collocation point

Keywords： plate     bending     meshless method     collocation    

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Improved prediction of pile bending moment and deflection due to adjacent braced excavation

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0961-2

Abstract: This study develops equations to predict the existing pile bending moment and deflection produced byIt is practically unfeasible to obtain measurement data; hence, artificial data for the bending momentThe estimation results of the developed equations can provide satisfactory pile bending moment and deflection

Keywords： pile responses     excavation     prediction     deflection     bending moments    

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Measurement of dynamic fracture toughness and failure behavior for explosive mock materials

Pengwan CHEN, Zhongbin ZHOU, Shaopeng MA, Qinwei MA, Fenglei HUANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 292-295 doi: 10.1007/s11465-011-0237-8

Abstract:

In this work, a pre-cracked semi-circular shaped explosive simulant was loaded using a split Hopkinson pressure bar (SHPB). A high-speed camera was used to capture the deformation and fracture process of the specimen in situ. The digital images were processed using the digital image correlation (DIC) method. Next, full displacement and strain fields were obtained. The displacement vector field shows that the specimen fractured under tensile stress action. The strain field can be used to predict the crack propagation. Results show that the method of combined DIC and SHPB is effective to study the dynamic deformation and fracture behavior of explosive simulants. In addition, the specimen was loaded using a drop weight. The fracture toughness of the specimen was preliminary measured.

Keywords： image correlation     polymer bonded explosive simulant     split Hopkinson pressure bar (SHPB)     semicircular bendingtest     deformation     fracture toughness    

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Landing control method of a lightweight four-legged landing and walking robot

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0707-1

Abstract: A lightweight four-legged landing and walking robot called “FLLWR” is designed in this study.

Keywords： landing and walking robot     lunar exploration     buffer landing     compliance control    

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growth behavior of a 170 mm diameter stainless steel straight pipe subjected to combined torsion and bending

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 905-913 doi: 10.1007/s11709-021-0683-2

Abstract: equipment, such as a pump directly fitted with hanger in the piping system, experiences torsional and bendingHigher crack growth rate occurs because of this torsional load in addition to the bending load.necessary to study the fatigue behavior of piping components under the influence of combined torsional and bending

Keywords： fatigue life     Delale and Erdogan method     RMS–SIF approach     stainless steel     torsion and bending load    

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A novel structural modification to eliminate the early coupling between bending and torsional mode shapes

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 131-142 doi: 10.1007/s11709-016-0376-4

Abstract: novel structural modification approach has been adopted to eliminate the early coupling between the bendingvertical and torsional displacements are calculated at the mid span of the deck to analyze both the bending

Keywords： aeroelastic instability     structural damping     flutter wind speed     bending stiffness     torsional stiffness    

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Motion planning and tracking control of a four-wheel independently driven steered mobile robot with multiple

Xiaolong ZHANG, Yu HUANG, Shuting WANG, Gen LI, Yuanlong XIE, Wei MENG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 504-527 doi: 10.1007/s11465-020-0626-y

Abstract: Safe and effective autonomous navigation in dynamic environments is challenging for four-wheel independently

Keywords： mobile robot     multiple maneuvering mode     motion planning     tracking control     receding horizon control    

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Title Author Date Type Operation

Ductility improvement of GFRP-RC beams using precast confined concrete block in compression zone

Journal Article

Consumption of carbon fiber plates in the reinforced concrete beams strengthened with CFPs

BU Liangtao, SHI Chuxian, SONG Li

Journal Article

Experimental study on mechanical properties of a novel micro-steel fiber reinforced magnesium phosphate cement-based concrete

Journal Article

3D fracture modelling and limit state analysis of prestressed composite concrete pipes

Pengfei HE, Yang SHEN, Yun GU, Pangyong SHEN

Journal Article

Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Journal Article

The Loading Capacity of Three Point Bending BeamWith the Resistant Force of Cohesive Crack

Wang Limin,Xu Shi ,Ren Chuanbo

Journal Article

The Double-K Fracture Parameter of Concrete for Non-Standard Three Point Bending Beam Specimens

Wu Zhimin,Xu Shilang,Ding Yining,Lu Xijing,Liu Jiayi,Ding Sheng gen

Journal Article

Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete railway sleepers

Journal Article

A new meshless approach for bending analysis of thin plates with arbitrary shapes and boundary conditions

Journal Article

Improved prediction of pile bending moment and deflection due to adjacent braced excavation

Journal Article

Measurement of dynamic fracture toughness and failure behavior for explosive mock materials

Pengwan CHEN, Zhongbin ZHOU, Shaopeng MA, Qinwei MA, Fenglei HUANG

Journal Article

Landing control method of a lightweight four-legged landing and walking robot

Journal Article

growth behavior of a 170 mm diameter stainless steel straight pipe subjected to combined torsion and bending

Journal Article

A novel structural modification to eliminate the early coupling between bending and torsional mode shapes

Nazim Abdul NARIMAN

Journal Article

Motion planning and tracking control of a four-wheel independently driven steered mobile robot with multiple

Xiaolong ZHANG, Yu HUANG, Shuting WANG, Gen LI, Yuanlong XIE, Wei MENG

Journal Article