張力腿基礎(chǔ)設(shè)計(jì)參數(shù)對(duì)大跨度浮式懸索橋行車動(dòng)力響應(yīng)的影響

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中圖分類號(hào)：U44 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：2096-6717（2025）03-0201-（

Influence of the tension leg platform's design parameters on the dynamic response of a long-span floating suspension bridge under vehicle loading

BAI Zhiyu1，WEI Kai'，ZHANGFeng2，ZHANGZeduan1 （1.StateKeyLaboratoryofBridge Inteligentand Green Construction，SouthwestJiaotong University，Chengdu 611756，P.R. China; 2.Nanchang Urban Planning and Design Research Institute Group Co.，Ltd.，Nanchang 330038，P.R.China）

Abstract： Construction schemes for long-span floating suspension bridges based on tension leg platforms have high application prospects in high water depth and soft soil environments.Due to their low foundation stifness， vehicle loads may induce significant vibrations in bridges.This phenomenon can be mitigated by adjusting the parameters of the tension leg platform.So，there is limited research on this novellong-span floating bridge under vehicle loads.However，the feasibilityand applicability of such schemes need validation.This paper utilized finite element software to compute the response of a floating suspension bridge model under the vehicle load. The effect of changes in the submerged depth and cable inclination angle on the response was investigated using methods such as modal analysis. The study revealed that adjusting the parameters of the submerged depth and cable inclination angle primarily alters the first two vibrational modes，significantly affcting the lateral responses.Increasing the submerged depth of the platform and adding inclined tension leg cables effectively reduced vibrations under the vehicle load.Additionally，the optimal modification of the cable inclination angle requires specific analysis.Therefore，during the design phase，the relevant tension leg platform design parameters are crucial forfinding the most suitable configuration，which canenhance the overallfeasibility and applicability of floating bridges under the vehicle load.

Keywords：long-span floating suspension bridge；vehicle load；tension leg platform；design parameters; dynamic response characteristics

隨著沿海地區(qū)經(jīng)濟(jì)的高速發(fā)展，深水浮式橋梁設(shè)計(jì)開始在水深較深、海底土質(zhì)較軟的地理環(huán)境下展現(xiàn)出較大的應(yīng)用優(yōu)勢(shì)，特別是以張力腿平臺(tái)（TLP）以及SPAR平臺(tái)等深水浮式平臺(tái)為基礎(chǔ)的大跨度浮式橋梁擁有了越來越廣泛的應(yīng)用前景[]。（剩余12167字）