Strut-and-tie model for high strength concrete beams with combination of links and horizontal web bar

Abstract: High Strength Concrete (HSC) is an aesthetic and durable material for bridge and viaduct construction. One of HSC advantages is that columns will have smaller cross section hence their visual obstruction to their surrounding environment will be reduced. Horizontal Web Bar (HWB), figure 2, has a number of advantages such as improved shear capacity of RC beams. This paper discusses shear behaviour of HSC beams with HWB and recommends a Strutand-tie model (STM) for this structural system, figure 6. A number of HSC and Normal Strength Concrete (NSC) beams were tested in order to compare their shear resistance. Furthermore an equal numbers of HSC and NSC beams with HWB were tested to failure, table 1. The rules for estimating the contribution of HWB to the shear resistance were investigated by using the experimental measurement of strains in the steel as well as other available tests results. Finite Element analysis was performed on HSC beams with HWB. The acquired numerical results were compared with those of experimental strains obtained by strain gauges of stirrups, tension steel and HWB. The experimental and the numerical results were used to propose suitable assumptions in order to develop an appropriate Strut-and-tie (STM) model for HSC beams with HWB and shear stirrups of span/depth ratio equals 3

Author(s): Motamed.J & Al-Hussaini. A

Date Published: 01 June 2025

Depositing User: Basiratu Kolawole

Keywords: Concrete beams, horizontal web bar, High Strength Concrete (HSC) & Normal Strength Concrete (NSC)

Page(s): 1-8

Place of publication: Tehran/Iran and Leipzig/Germany

Subject(s): Structural Engineering & Civil Engineering

Type of publication: Journal Article