How to Calculate the Load-Bearing Capacity of UHPC Panels Used as Floor Slabs? Qinglong's UHPC Floor Slab Design Method

The calculation of UHPC floor slab load-bearing capacity must consider material nonlinearity, membrane effect, and crack control. In flexural capacity calculation, the tensile stress of UHPC in the tension zone is considered (taking the standard tensile strength value of 8-10MPa), and the compressive zone stress diagram is parabola-rectangular. For an 80mm thick UHPC floor slab with a 2m span, the allowable uniform load can reach 15kN/m².

In actual calculations, Qinglong UHPC adopts finite element software for refined analysis: considering material constitutive relationships (the ascending branch of the compressive stress-strain curve is parabolic, and the descending branch is linear); strain hardening is considered in the tension zone; crack width is controlled at ≤0.1mm. In a long-span floor slab project using 80mm thick UHPC slabs with a 3m span, the measured deflection was L/800 and the crack width was 0.08mm, fully meeting service requirements.

Material Constitutive Relationships

The compressive stress-strain curve is parabolic; strain hardening is considered in the tension zone; these relationships enable accurate calculation.

Load-Bearing Capacity Calculation Principles

Membrane effect is considered; crack width is controlled at ≤0.1mm; these principles ensure safety.

Practical Application Data

80mm thick slab with a 3m span, load of 15kN/m²; these data verify the calculation.

Inspection and Verification Methods

Load test verification; long-term monitoring data; these methods ensure reliability.

Floor slab design requires professional calculation. Qinglong UHPC's mature experience guarantees safety.