Estimating shear strength is a crucial aspect of beam design. The goal this research to develop calculation technique for ultra-high performance fiber reinforced concrete (UHPFRC) beams. To begin, test database 200 UHPFRC specimens established. Then, random forest (RF) used evaluate the importance influence factors Subsequently, three machine learning (ML)-based models, including artificial neu...

To study the seismic performance of high-strength reinforced concrete frame joints, cyclic loading tests were carried out on six beam-column joints configured with new Cold-rolled Ribbed Bar (CRB) 735 steel reinforcement and one joint Hot-rolled (HRB) 400 ordinary to obtain effects axial compression ratio stirrup in core joints. The test results show that following: (1) Increasing can improve e...

This paper examines the effectiveness of pure torsional loads on hollow reinforced concrete high-strengthened beams. Engineers need to know how much twist a structural member generates when exposed design it properly. is done through an experimental investigation behavior (RC) beams using twelve rectangular with varying parameters, such as spacing stirrups, influence steel fiber fraction, and m...

This paper presents a data-driven machine learning approach of support vector regression (SVR) with genetic algorithm (GA) optimization called SVR-GA for predicting the shear strength capacity medium- to ultra-high concrete beams longitudinal reinforcement and vertical stirrups. One hundred forty eight experimental samples collected different geometric, material physical factors from literature...

This research aims to evaluate the effect of using different shear reinforcement details on punching behavior interior slab column connections. A comprehensive experimental program is conducted sixteen specimens having same concrete dimensions 1100×1100×160 mm where depth chosen be less than that stipulated by design codes. The parameters under examination were type arranged in a cross shape pe...

OBJECTIVE To investigate the possible influences of saddle type on the incidence of "lower back pain" in a cross section of equestrian riders. METHODS 108 equestrian riders completed a questionnaire concerning their riding habits and whether they suffered from lower back pain. In particular they were asked whether they used a traditional style/general purpose saddle (GP) or a deep seated/West...

U-shaped thin-walled concrete bridge beams usually suffer the combined actions of flexure, shear and torsion, but no research about the behavior of U-shaped thin-walled RC beams under combined actions has been reported in literature. Three large specimens of U-shaped thin-walled RC beams were tested under different torque–bending moment ratios (T–M ratios) of 1:5, 1:1 and 1:0 to investigate the...

In continental and north-western Europe armed cavalry – aided by the introduction of stirrup was closely linked to emergence feudalism but this also case in Scandinavia? Were resulting military specialists growing national kingdoms, or local regional power spheres ruled petty kings? I will investigate historical region Upplǫnd last Norse area be integrated into Kingdom Norway Óláfr Haraldsson a...

The square steel tube component has a beautiful appearance, simple joint connection, and it is widely available. However, the uneven distribution of effective constraints in cross-section hinders its application. A novel concrete-filled tubular column was tested under axial compression. There were 11 specimens [10 columns reinforced with rhombic stirrups 90-degree internal angle (SSSC specimens...