This study proposes an integrated framework combining Gaussian process regression (GPR) with an enhanced whale optimization algorithm improved by the Salp Swarm Algorithm (EWOSSA). GPR is first used to model the nonlinear relationship between cable forces and structural responses. The synchronous construction of the pylon and cables of a cable-stayed bridge without backstays has the characteristics of a short construction period and reduced support costs. However, it also increases the difficulty of construction control, making the reasonable completion state of the bridge. To address this challenge, this paper proposes a dynamic trust-threshold-based active learning strategy (DGPR) within a surrogate-assisted decoupled optimization framework. The decoupled framework transforms the original problem into sub-problems with reduced cross-variable nonlinearity, while the. What are the main geometric features of cable-stayed bridges and which design requirements determine their form? Earth anchorages of suspension cables are massive, while the horizontal component of stay-cable forces is resisted by the deck.
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