High strength and high performance steels used in structural engineering have been developed, but the application is constrained design work changes as a result of different material property. In order to study steel property features, production process, grade code limit requirement were reviewed discussed. Some important mechanical indexes including stress-strain relationship, yield-tensile ratio (i.e. Y/T ratio), ductility toughness, analyzed based on large amount tension coupon test data...

Local buckling can be ignored for hot-rolled ordinary strength steel equal angle compression members, because the width-to-thickness ratios of leg don't exceed limit value. With development structures, Q420 high angles with nominal yield 420 MPa have begun to widely used in China. Because strength, value ratio becomes smaller than that which causes some sections Consequently, local must considered under axial compression. The existing research on members is briefly summarized, and it shows...

An analytical procedure is proposed to establish the nonlinear moment-rotation ( M -Φ) characteristics for bolted end-plate connections in flexibly jointed steel frames. The connection are assumed depend on component behavior of tension zone, compression and shear zone. column flange end plate with each bolt row zone considered as a series T-stub assembly effective length recommended by Eurocode 3. Based beam yield-line theory, elastoplastic force-deformation relationship derived. With...

Local buckling can be ignored for hot-rolled ordinary strength steel equal angle compression members, because the width-to-thickness ratios of leg don\'t exceed limit value. With development structures, Q420 high angles with nominal yield 420 MPa have begun to widely used in China. Because strength, value ratio becomes smaller than that which causes some sections Consequently, local must considered under axial compression. The existing research on members is briefly summarized, and it shows...

The system inertia insufficiency brought on by a high percentage of wind power access to grid can be effectively resolved wind-storage collaborative participation in primary frequency regulation (PFR). However, the impact energy storage system-frequency is significantly influenced its state charge (SOC). In this paper, considering SOC (ES) and stochastic characteristics turbine (WT) output, control strategy PFR proposed. Firstly, WT adaptive model droop were constructed. Additionally,...

The combined connection with welds and bolds has advantages of both bolts connections, can be widely used in reinforcing the joint steel structure. In this paper, Finite Element Method (FEM) was taken to analyze carrying capacity welds, results ware compared those come from experimental investigation. Further analysis based on FEM performed research failure mode bearing performance contribution .Advice provided for related design.

Three point bending tests were carried out on 14mm-thick Q460C the high-strength structural steel at low temperature, and scanning electronic microscope of fracture appearance was analyzed. The results showed that obvious feature brittle mechanism shown three specimen whose testing took place -40°C. And crack tip opening displacement value steel, which less than Q235 Q345 Q390 tended to decrease with respect temperature reduction. Moreover, a Boltzmann function fitting analysis applied...

The combined connection with welds and bolds can be widely used in reinforcing the joint steel structure. In this paper, proposed design method of bolts longitudinal was given based on tests finite element analysis (FEA). considers effect strength ratio between welds. safety reliability were verified by FEA comparison other method. contribute to promotion application connections.

The elastic modulus of steel will decrease in case high temperature which makes the reticulated shells easier to have global instability phenomenon. In order obtain elasto-plastic stability bearing capacities for K6 single-layer [1], nonlinear finite analysis compete process was conducted by ANAYS software under on two typical cases include non-uniform distribution and localized temperature. Based calculation formula at ambient temperature, capacity obtained.

The composite steel–concrete rigid frame bridge is composed of steel or girders connecting rigidly to RC piers, and has advantages lower maintenance costs, faster construction, higher resistance ductility during an earthquake. In this paper, a new type connection developed studied by finite element analysis. comparison with other types connections shows that good structural performance from the confining concrete preventing buckling concrete.

Characteristics of aluminum alloys such as light weight, high strength-to-weight ratio and favorable corrosion resistance have brought about a bright application prospect in building structures. Wrought are applicable to common beams columns, while casting can be fabricated connectors point-supported glass curtain wall joints spatial latticed structures on account easy implement moulding. Because strength, outstanding castability remarkable mechanical properties after heat treatment, ZL111...

Compared to the ordinary strength steel extensively applied in structures currently, high steel, a new kind of construction material, has many differences on mechanical properties. Though been several projects world, which obtained good effects, there is lack design method for and researches loading capacity members. To study local buckling behavior members under axial compression, finite element models are developed predict welded I-section box-section stub columns compression this paper....

High strength steel sections have been increasingly used in buildings and bridges, angles also widely many structures, especially transmission towers long span trusses. However, high exhibits mechanical properties that are quite different from ordinary steel, hence, the local buckling behavior of equal angle members under axial compression varies with strength. there is a lack research on relationship A finite element model developed this paper to analyze compression, study its...