How to Control the Jointing Precision of Multi-Curved UHPC Shapes? UHPC Complex Shape Installation Technology

Precision control of multi-curved UHPC profile jointing adopts a systematic solution of "3D measurement + digital pre-assembly + precise positioning". Installation error control standards: joint width deviation ≤1.5mm, height difference between adjacent panel surfaces ≤1mm, overall profile tolerance ≤5mm. Through total station measurement (accuracy ±1mm) and digital simulation technology, precise alignment of complex profiles is achieved.

Specific control measures: establishing a measurement control network (spacing ≤5m), using dedicated positioning fixtures with prisms, and correcting installation positions in real time. In a double-curved curtain wall project with a maximum radius of curvature of 2m, digital pre-assembly identified and corrected 156 design errors, achieving a 98% first-pass success rate for on-site installation. The intelligent installation system developed by Qinglong UHPC increased installation efficiency by 40% and reduced errors by 50%.

Measurement Control System

A three-level control network is established: overall control network (accuracy ±3mm), zone control network (accuracy ±2mm), and detail control network (accuracy ±1mm). Leica total stations are used, with angular accuracy of 1" and distance accuracy of 1mm+1.5ppm.

Digital Pre-Assembly Technology

Virtual assembly is carried out through BIM models to detect interference between components. Design errors are identified in advance, avoiding on-site modifications. Installation sequences are optimized to improve construction efficiency.

Positioning System Design

Dedicated 3D adjustable connectors are developed with an adjustment range of ±15mm. Positioning datum points are set to ensure repeatable positioning accuracy of ≤0.5mm. Error-proof design is adopted to prevent incorrect installation.

Error Adjustment Measures

An error adjustment process is established so that corrections are made promptly when cumulative errors exceed limits. A step-by-step approximation method is adopted to achieve rational error distribution and smooth transitions.

Jointing precision is the key to installing complex profiles. Through scientific measurement and control methods, the final result is ensured to meet design requirements.