The combustor operates under extremely complex environments involving high temperatures, fluid flow, and combustion, posing significant challenges to load prediction and dynamic response forecasting. To address these challenges, a thermoacoustic coupled test platform was developed specifically for combustor structures under high-temperature and high-noise conditions. This platform enabled the acquisition of critical parameters such as surface temperature, acoustic noise, and acceleration of the combustor under complex environmental conditions. Dynamic response data of the structure under various high-temperature and acoustic load scenarios were obtained, revealing the influence patterns of temperature and acoustic loads on combustor structural behavior. Based on these data, a computational model was established to calculate acceleration responses under typical operating conditions. The computed results were validated against experimental measurements, demonstrating that the response error at peak frequencies does not exceed 15%. This study provides a technical reference for combustor structural design and performance evaluation.