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Experimental study on shear behavior of prestressed reactive powder concrete I-girders

Hui ZHENG, Zhi FANG, Bin CHEN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 618-627 doi: 10.1007/s11709-018-0500-8

Abstract: In the present paper, experimental results from tests on eight prestressed RPC I-section girders failingpredictions from three standards (AFGC, JSCE and SIA) on the design of UHPC structures were compared with the experimentalresult suggesting that the experimental strength is almost always higher than predicted.Further study should be needed to develop an analytical method and computation model for shear strength

Keywords： prestressed concrete     RPC(Reactive Powder Concrete)     concrete beams     shear strength     experimental study    

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On braced trapezoidal corrugated steel shear panels: An experimental and numerical study

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 396-410 doi: 10.1007/s11709-023-0934-5

Abstract: In this study, a new system consisting of a combination of braces and steel infill panels called theobtain the hysteretic behavior of the proposed system, the quasi-static cyclic performances of two experimentalThe finite element modeling method was then verified based on the obtained experimental results.The results obtained from the parametric study indicate that the corrugated steel shear panel (CSSP)

Keywords： trapezoidal corrugated plate     steel shear panel     braced steel shear panel     experimental study     buckling    

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An experimental study on the flexural behavior of heavily steel reinforced beams with high-strength concrete

Yasser SHARIFI, Ali Akbar MAGHSOUDI

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1,   Pages 46-56 doi: 10.1007/s11709-014-0237-y

Abstract: Present study describes an experimental research on the behavior of high-strength concrete beams in ultimateTests are reported in this study on the flexural behavior of high-strength reinforced concrete (HSRC)Also a comparison between theoretical and experimental results is reported here.

Keywords： high-strength concrete (HSC) members     flexural behavior     reinforced concrete     experimental results     ultimate    

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Experimental study on the laminar flame speed of hydrogen/natural gas/air mixtures

Chen DONG, Qulan ZHOU, Xiaoguang ZHANG, Qinxin ZHAO, Tongmo XU, Shi’en HUI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 417-422 doi: 10.1007/s11705-010-0515-8

Abstract: Laminar flame speeds of hydrogen/natural gas/air mixtures have been measured over a full range of fuel compositions (0–100% volumetric fraction of H ) and a wide range of equivalence ratio using Bunsen burner. High sensitivity scientific CCD camera is use to capture the image of laminar flame. The reaction zone area is employed to calculate the laminar flame speed. The initial temperature and pressure of fuel air mixtures are 293 K and 1 atm. The laminar flame speeds of hydrogen/air mixture and natural gas/air mixture reach their maximum values 2.933 and 0.374 m/s when equivalence ratios equal to 1.7 and 1.1, respectively. The laminar flame speeds of hydrogen/natural gas/air mixtures rise with the increase of volumetric fraction of hydrogen. Moreover, the increase in laminar flame speed as the volumetric fraction of hydrogen increases presents an exponential increasing trend versus volumetric fraction of hydrogen. Empirical formulas to calculate the laminar flame speeds of hydrogen, natural gas, and hydrogen/natural gas mixtures are also given. Using these formulas, the laminar flame speed at different hydrogen fractions and equivalence ratios can be calculated.

Keywords： laminar flame speed     experimental study     Bunsen flame    

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An experimental study for optimization of high range water reducing superplasticizer in self compacting

Rahul DUBEY, Pardeep KUMAR

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 62-71 doi: 10.1007/s11709-013-0192-z

Abstract: This paper focuses mainly on experimental study to optimize dosages of superplasticizer for mortar of

Keywords： self-compacting concrete (SCC)     fresh properties     superplasticizer     optimization     compressive strength    

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An experimental study on plunging depth of density currents

Hassan GOLEIJ, Amir Hamzeh HAGHIABI, Abbas PARSAIE

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 388-395 doi: 10.1007/s11709-017-0417-7

Abstract: In this study the influences of bed slope and hydraulic parameters on plunging depth were experimentally

Keywords： dense current     plunge point     Densimetric Froude Number     dam reservoirs    

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Experimental study on film combustion formed by spirally fluted horizontal tube

MEI Ning, ZHANG Bin, ZHAO Jian, ZHANG Ming

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 54-58 doi: 10.1007/s11708-008-0023-4

Abstract: A test bed was established and experimental comparisons were made between the prototype and a transferredThe theoretical and experimental results show that film combustion has a higher combustion efficiency

Keywords： homogeneous     transferred     evaporation     micro-combustion     efficiency    

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Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 834-850 doi: 10.1007/s11709-021-0743-7

Abstract: The concept of steel sheet glass fiber reinforced polymer (GFRP) composite bar (SSGCB) was put forward. An optimization plan was proposed in the combined form of SSGCB. The composite principle, material selection, and SSGCB preparation technology have been described in detail. Three-dimensional finite element analysis was adopted to perform the combination form optimization of different steel core structures and different steel core contents based on the mechanical properties. Mechanical tests such as uniaxial tensile, shear, and compressive tests were carried out on SSGCB. Parametric analysis was conducted to investigate the influence of steel content on the mechanical properties of SSGCB. The results revealed that the elastic modulus of SSGCB had improvements and increased with the rise of steel content. Shear strength was also increased with the addition of steel content. Furthermore, the yield state of SSGCB was similar to the steel bar, both of which indicated a multi-stage yield phenomenon. The compressive strength of SSGCB was lower than that of GFRP bars and increased with the increase of the steel core content. Stress-strain curves of SSGCB demonstrated that the nonlinear-stage characteristics of SSGCB-8 were much more obvious than other bars.

Keywords： steel sheet GFRP composite bar     combination form     numerical modeling     mechanical properties test     strength    

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A combined experimental and theoretical study of micronized coal reburning

Hai ZHANG, Jiaxun LIU, Jun SHEN, Xiumin JIANG

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 119-126 doi: 10.1007/s11708-012-0226-6

Abstract: elucidate the advantages of MCR, a combination of Diffuse Reflection Fourier Transform Infrared (FTIR) experimentalThe present study of MCR will provide insight into its lower NO emission and guidance for further studies

Keywords： hydroxyl radicals     Fourier transform infrared spectroscopy (FTIR)     density functional theory (DFT)     homogeneous reaction mechanism     NOx    

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An experimental study on ignition of single coal particles at low oxygen concentrations

Wantao YANG, Yang ZHANG, Lilin HU, Junfu LYU, Hai ZHANG

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 38-45 doi: 10.1007/s11708-020-0692-1

Abstract: An experimental study on the ignition of single coal particles at low oxygen concentrations ( <21%) wasCompared with literature experimental data obtained at a high value, the ignition delay time decreases

Keywords： coal particles     low oxygen concentration     ignition     ignition temperature     ignition modes    

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Seismic experimental study on a concrete pylon from a typical medium span cable-stayed bridge

Yan XU, Shijie ZENG, Xinzhi DUAN, Dongbing JI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 401-411 doi: 10.1007/s11709-018-0464-8

Abstract:

According to the current seismic design codes of bridges in China, cable-stayed bridges have been usually required to remain elastic even subjected to strong earthquakes. However, the possibilities of pylon plastic behavior were revealed in recent earthquake damages. The lack of due diligence in the nonlinear seismic behavior of the pylon has caused a blurry understanding about the seismic performance of such widely built though less strong earthquake experienced structures. In light of this point, a 1/20 scaled concrete pylon model which from a typical medium span cable-stayed bridge was designed and tested on the shaking table longitudinally. The dynamic response and seismic behavior of the pylon were measured, evaluated and compared to reveal its vulnerable parts and nonlinear seismic performance. The results show that most parts of the concrete pylon remain elastic even under very strong excitations, which means a sufficient safety margin for current pylon longitudinal design. The most vulnerable parts of the pylon appeared first at the pylon bottom region, cracks opening and closing at the pylon bottom were observed during the test, and then extended to the lower column and middle column around the lower strut.

Keywords： cable-stayed bridge     pylon     shaking table test     seismic behavior    

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An experimental study on spray auto-ignition of RP-3 jet fuel and its surrogates

Yaozong DUAN, Wang LIU, Zhen HUANG, Dong HAN

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 396-404 doi: 10.1007/s11708-020-0715-y

Abstract: Surrogate fuel is usually used for fundamental combustion study due to the complex composition of practicalExperimental results indicate that Surrogate 1 overestimates the auto-ignition propensity of RP-3 jet

Keywords： RP-3 jet fuel     surrogate     spray auto-ignition     constant volume combustion chamber    

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Experimental study on the stratum applicability and mechanisms of bubble–slurry for earth pressure balance

Frontiers of Structural and Civil Engineering   Pages 1387-1399 doi: 10.1007/s11709-023-0005-y

Abstract: In this study, an anionic surfactant was used to foam in bentonite slurry to form bubble–slurry to maximize

Keywords： EPB shield     bubble–slurry     soil conditioning     stability     permeability    

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Experimental study of the restoring force mechanism in the self-centering beam (SCB)

Abhilasha MAURYA,Matthew R. EATHERTON

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 3,   Pages 272-282 doi: 10.1007/s11709-016-0346-x

Abstract: This paper describes the SCB concepts and experimental program on five SCB specimens at two-third scaleExperimental results are presented including the global force-deformation behavior.equations developed for the SCB predict the moment capacity well, with a mean difference of 6% between experimental

Keywords： self-centering seismic system     seismic design     hysteretic behavior     restoring force     resilient structural system    

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Experimental study on heat transfer characteristics of supercritical carbon dioxide in horizontal tube

LV Jing, FU Meng, QIN Na, DONG Bin

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 339-343 doi: 10.1007/s11708-008-0045-y

Abstract: conventional correlations for convection heat transfer of supercritical carbon dioxide were verified by the experimentaldata in this study and the correlation agree with this experimental condition was determined.

Keywords： conventional     experimental condition     vertical     Reynolds number     transfer    

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Title Author Date Type Operation

Experimental study on shear behavior of prestressed reactive powder concrete I-girders

Hui ZHENG, Zhi FANG, Bin CHEN

Journal Article

On braced trapezoidal corrugated steel shear panels: An experimental and numerical study

Journal Article

An experimental study on the flexural behavior of heavily steel reinforced beams with high-strength concrete

Yasser SHARIFI, Ali Akbar MAGHSOUDI

Journal Article

Experimental study on the laminar flame speed of hydrogen/natural gas/air mixtures

Chen DONG, Qulan ZHOU, Xiaoguang ZHANG, Qinxin ZHAO, Tongmo XU, Shi’en HUI

Journal Article

An experimental study for optimization of high range water reducing superplasticizer in self compacting

Rahul DUBEY, Pardeep KUMAR

Journal Article

An experimental study on plunging depth of density currents

Hassan GOLEIJ, Amir Hamzeh HAGHIABI, Abbas PARSAIE

Journal Article

Experimental study on film combustion formed by spirally fluted horizontal tube

MEI Ning, ZHANG Bin, ZHAO Jian, ZHANG Ming

Journal Article

Combination form analysis and experimental study of mechanical properties on steel sheet glass fiber

Journal Article

A combined experimental and theoretical study of micronized coal reburning

Hai ZHANG, Jiaxun LIU, Jun SHEN, Xiumin JIANG

Journal Article

An experimental study on ignition of single coal particles at low oxygen concentrations

Wantao YANG, Yang ZHANG, Lilin HU, Junfu LYU, Hai ZHANG

Journal Article

Seismic experimental study on a concrete pylon from a typical medium span cable-stayed bridge

Yan XU, Shijie ZENG, Xinzhi DUAN, Dongbing JI

Journal Article

An experimental study on spray auto-ignition of RP-3 jet fuel and its surrogates

Yaozong DUAN, Wang LIU, Zhen HUANG, Dong HAN

Journal Article

Experimental study on the stratum applicability and mechanisms of bubble–slurry for earth pressure balance

Journal Article

Experimental study of the restoring force mechanism in the self-centering beam (SCB)

Abhilasha MAURYA,Matthew R. EATHERTON

Journal Article

Experimental study on heat transfer characteristics of supercritical carbon dioxide in horizontal tube

LV Jing, FU Meng, QIN Na, DONG Bin

Journal Article