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Residual behavior of welded hollow spherical joints after

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Zhihua Chen's research works Tianjin University,Tianjin

Zhihua Chen's 160 research works with 1,088 citations and 7,335 reads,including Lateral stiffness evaluation on corner-supported thin walled modular steel structuresZhihua Chen's research works Tianjin University,Tianjin Understanding the behavior of the welded hollow spherical joint after elevated-temperature exposure is critical for the fire damage assessment of the entire space lattice structures.US3774280A - Method of fabricating hollow balls for use in After having been initially deformed into a substantially closed and non-spherical hollow ball by the aforementioned initial spin forging step,the initially formed structure may thereafter be pressure or forge-welded into the final spherical,hollow ball shape and the openings thereof,eliminated by the unique application thereto of a series

Study on mechanical behavior of welded box member

Mar 12,2016 Residual behavior of welded hollow spherical joints after#0183;Detailed numerical investigation on the mechanical behavior of welded box member was conducted by applying welding residual stress as initial load.The temperature field was first derived and the result was used as body load for elasticplastic mechanical analysis.Distribution law of welding residual stress was derived based on models in different scales.Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextProceedings of IASS Annual Symposia Ingenta ConnectStudy on the Axial Compression Behavior of Circular Steel Tubes under the Influence of Local Corrosion Favourites ADD.Internal blast loads in confined spherical shell structures pp.1-8(8) Authors Qi,Shaobo; Zhi,Xudong; Ma,Jialu; Fan,Feng.Favourites ADD.Residual behavior of welded hollow spherical joints after exposure to the ISO Some results are removed in response to a notice of local law requirement.For more information,please see here.

Residual behavior of welded hollow spherical joints after

Oct 01,2017 Residual behavior of welded hollow spherical joints after#0183;Provided the general appearance of the structure remains satisfactory after a fire,the residual behavior of welded hollow spherical joints in these structures should be accurately estimated to ensure safety.However,the post-fire behavior of welded hollow spherical joints has not been explored in existing studies.Quarterly Publication Rs.20 JULY 2019 Weld 18 Bead 2method was proposed from the post-fire residual behaviour of welded hollow spherical joints of Q235 and Q345 steels at 600 Residual behavior of welded hollow spherical joints after#176;C,800 Residual behavior of welded hollow spherical joints after#176;C,and 1000 Residual behavior of welded hollow spherical joints after#176;C [10].Liu et al [11] evaluated the post-fire residual mechanical properties of Q235 and Q345 steel butt welded joints,results revealed that post-fire properties of welded joints were affected withProceedings of IASS Annual Symposia Ingenta ConnectStudy on the Axial Compression Behavior of Circular Steel Tubes under the Influence of Local Corrosion Favourites ADD.Internal blast loads in confined spherical shell structures pp.1-8(8) Authors Qi,Shaobo; Zhi,Xudong; Ma,Jialu; Fan,Feng.Favourites ADD.Residual behavior of welded hollow spherical joints after exposure to the ISO

Post-fire Behavior of Welded Hollow Spherical Joints

Apr 25,2018 Residual behavior of welded hollow spherical joints after#0183;Welded hollow spherical joints are widely used as a connection pattern in space lattice structures.Understanding the post-fire residual behavior of welded hollow spherical joints is crucial for fire damage assessment of the space lattice structures.However,the post-fire behavior of welded hollow spherical joints has not been explored in existing studies.Personal Information Science Publishing GroupFrom 2017 to 2020,National Natural Science Foundation of China (General Program) ,Study on residual mechanical properties of space grid structure with welded hollow spherical after fire.Mechanical behavior of single-layer - Welding in the WorldThe welded hollow spherical joints (WHSJ) have been widely used in space lattice structures.There have been many researchers investigating the mechanical behavior of WHSJ.But few literatures that considered the influence of welding residual stress can be found,let alone the integral structure analysis considering welding residual stress.In this paper,welding residual stress of WHSJ was

MECHANICAL PERFORMANCE OF WELDED HOLLOW

Joints in the spatial grid structure mainly include WHSJs,bolted hollow spherical joints,hub-type joints,cast steel joints,tubular joints,and Temcor joints (Fig.1) 1,2,3,4,5 .WHSJs were proposed by Professor Liu [6] from Tianjin University in 1965.With a clear load path and convenient connectionMECHANICAL PERFORMANCE OF WELDED HOLLOW SPHERICAL JOINTS [21] Liu H.B.,Lu J.and Chen Z.H.,Residual behavior of welded hollow spherical joints after exposure to elevated temperatures,Journal of Constructional Steel Research,137,102-118,2017.[22] Lu J.,Liu H.B.and Chen Z.H.,Behavior of Welded Hollow Spherical Joints After Exposure to ISO-834 Standard Fire,Journal of MECHANICAL CALCULATION MODEL FOR WELDEDKeywords Welded hollow spherical joint,Mechanical calculation model,Finite element analysis model,Rupture,Failure mechanism,Structural damage 1.INTRODUCTION The welded hollow spherical joint was invented and first used in Tianjin Science Technology Hall in 1965 (Makowski [1]).Nowadays,this pattern of joint is extensively applied in

LOAD-CARRYING CAPACITY AND PRACTICAL DESIGN

Two kinds of joint for rigid connection of the steel hollow section members are proposed by Chinese relevant Code or Specifications [1,2,3] the welded hollow spherical joints (WHSJ),and the intersecting joint.The welded hollow spherical joints,which are popular for the domesticLOAD-CARRYING CAPACITY AND PRACTICAL DESIGNTwo kinds of joint for rigid connection of the steel hollow section members are proposed by Chinese relevant Code or Specifications [1,2,3] the welded hollow spherical joints (WHSJ),and the intersecting joint.The welded hollow spherical joints,which are popular for the domesticJournal of Constructional Steel Research - August 2019 Mechanical behavior of welded hollow spherical joints with diameter exceeding 1.0 m 21-33 Guo,Zhen / Qiao,Wenjuan / Jia,Xingzhi Mechanical properties of butt weldments made with E5515-G electrodes at high temperature 13-20 Wang,Yu-yin / Geng,Yue / Zhao,Mu-Zi / Chen,Jie

Jie LU PhD Tianjin University,Tianjin tju School

Welded hollow spherical joint is an extremely widely used connection pattern in space lattice structures.Understanding the behavior of the welded hollow spherical joint afterInvestigations on buckling behavior of single-layer Z-W Z,H Z,Z-H C (2016) Mechanical behavior of single-layer reticulated shell connected by welded hollow spherical joints [J].Welding in the world 60(1):6169 CrossRef Google Scholar 8.Form and Force 2019 - CIMNEResidual bearing capacity of welded hollow spherical joints after corrosion damage.Huiyun Chen,Hongbo Liu and Zhihua Chen.Abstract.A comparative study of the structural performance of different types of reticulated dome subjected to distributed loads.W.Gythiel,C.Mommeyer,T.Raymaekers and M.Schevenels.Abstract

Form and Force 2019 - CIMNE

Residual bearing capacity of welded hollow spherical joints after corrosion damage.Huiyun Chen,Hongbo Liu and Zhihua Chen.Abstract.A comparative study of the structural performance of different types of reticulated dome subjected to distributed loads.W.Gythiel,C.Mommeyer,T.Raymaekers and M.Schevenels.AbstractFire performances of space grid structureswelded hollow spherical joints under fire.Six joints were simulated under axial pressure or tension of five different load ratios which are the ratios of the real bearing loads and the design loads,repsectively.For each joint,three reference points shown in Figure 1Fatigue performance and life prediction methods research The grid structures with welded hollow spherical joint (WHSJ) have gained increasing popularity for use in industrial buildings with suspended cranes,and usually welded with steel tube (ST).The fatigue performance of steel tube-welded hollow spherical joint (ST-WHSJ) is however not yet well characterized,and there is little research on fatigue life prediction methods of ST-WHSJ.

Fatigue performance and life prediction methods research

The grid structures with welded hollow spherical joint (WHSJ) have gained increasing popularity for use in industrial buildings with suspended cranes,and usually welded with steel tube (ST).The fatigue performance of steel tube-welded hollow spherical joint (ST-WHSJ) is however not yet well characterized,and there is little research on fatigue life prediction methods of ST-WHSJ.Failure mechanism and practical load-carrying capacity hollow spherical joints under compressive load,and determined that joint connected with many members can be simplified into joint with single member.Some scholars researched effects of weld on capacity,and dynamic behaviour.Tests on joint were all limited by material graded Q235.The number of experiment of joint mad from Q345 was very small.Failure mechanism and practical load-carrying capacity hollow spherical joints under compressive load,and determined that joint connected with many members can be simplified into joint with single member.Some scholars researched effects of weld on capacity,and dynamic behaviour.Tests on joint were all limited by material graded Q235.The number of experiment of joint mad from Q345 was very small.

Experimental and numerical study on post-fire behavior of

Experimental study and finite element modeling on the structural behavior of high-strength Q460 steel columns after being exposed to ISO-834 standard fire are presented.Two section shapes were considered,namely welded H-shaped section and welded box-section.Experimental Study on Residual Mechanical Properties of Xue,S.D., Qiu,L.(2011).Experimental investigation on compression performance of welded hollow spherical joints in fire.Journal of Building Structures,32(2),113119.(in Chinese).Google ScholarExperimental Study on Constant-Amplitude Fatigue The grid structure with welded hollow spherical joints (WHSJs) is widely used in industrial buildings with suspended cranes.Cyclic loadings generated by the suspended cranes could result in the fatigue failure of WHSJs.However,a corresponding fatigue design method has not been established.This paper presents an experimental study on the fatigue performance of the weld toe in the steel tube

Cited by 2Publish Year 2020Author Hongbo Liu,Huiyun Chen,Zhihua ChenResidual behavior of welded hollow spherical joints after

The mechanical behavior of welded hollow spherical joints significantly changed after exposure to temperatures exceeding 600 Residual behavior of welded hollow spherical joints after#176;C,with phenomena of reductions in stiffness and strength but an Cited by 18Publish Year 2017Author Hongbo Liu,Hongbo Liu,Jie Lu,Zhihua ChenResidual behaviour of welded hollow spherical joints under Apr 01,2020 Residual behavior of welded hollow spherical joints after#0183;This paper presents an experimental study of welded hollow spherical joints (WHSJs) under corrosion and de-rusting conditions.First,two scanning tests (3D scanning and scanning electron microscopy (SEM)) and a weight loss test were conducted on the same batch of steel used to manufacture the joints to investigate the corrosion morphology and development of the WHSJs underCited by 13Publish Year 2018Author Jie Lu,Jie Lu,Hongbo Liu,Zhihua ChenMechanical performance of welded hollow spherical joints H.B.Liu,J.Lu,Z.H.ChenResidual behavior of welded hollow spherical joints after exposure to elevated temperatures J Constr Steel Res,137 (2017),pp.102-118 Google Scholar

Bending capacity of corroded welded hollow spherical joints

Provided the general appearance of the structure remains satisfactory after a fire,the residual behavior of welded hollow spherical joints in these structures should be accurately estimated to Behavior of welded hollow spherical joints after exposure Jan 01,2018 Residual behavior of welded hollow spherical joints after#0183;Welded hollow spherical joints are extensively used as a connection pattern in space lattice structures.Provided that structural collapse does not occur after a fire,a reliable evaluation of the residual performances of the structures is necessary to decide whether the structures should be dismantled,repaired,or directly reused.Author Hongbo Liu,Hongbo Liu,YingJie Zhang,Lan Wang,Yu Zhao,ZhiHua ChenPublish Year 2020Axial compression properties of welded hollow spherical Jun 01,2020 Residual behavior of welded hollow spherical joints after#0183;Test on welded hollow spherical joints with H-beams under high temperature. Axial compressive mechanical behavior and failure mode were obtained. Finite element analysis was presented and verified by test data. The parametric analysis of welded hollow spherical joints at high temperature is conducted.

Advanced Materials Research Vols.446-449 p.59

Through the combination of 17 specifications of welded hollow spheres and 40 specifications of cross shaped boards to form 122 kinds of cross shaped boardwelded hollow spherical Joints,the paper mainly analyzed the influence on stress-concentrated coefficient Kt from some factors as follows the length of the connection of the cross shaped Advanced Materials Research Vols.189-193 p.70 The fracture of the weld joint is a typical ductile fracture.The tensile strength of the joints reached 400MPa and the impact absorbed energy was about 35J,which meet the requirement of mechanical properties for emergency welding.Manual SHS welding is an effective welding method for emergency maintenance in battlefield and outside field.12345NextPost-fire Behavior of Welded Hollow Spherical Joints Apr 25,2018 Residual behavior of welded hollow spherical joints after#0183;Welded hollow spherical joints are widely used as a connection pattern in space lattice structures.Understanding the post-fire residual behavior of welded hollow spherical joints is crucial for fire damage assessment of the space lattice structures.However,the post-fire behavior of welded hollow spherical joints has not been explored in existing studies.

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