大跨度斜拉橋中跨合龍施工智能監(jiān)控系統(tǒng)技術(shù)研究

摘 要：該文通過監(jiān)控方法和計(jì)算理論2個(gè)方面對(duì)大跨度斜拉橋中跨合龍技術(shù)進(jìn)行研究。在監(jiān)控方法方面，利用多數(shù)據(jù)融合理論形成實(shí)時(shí)監(jiān)控的智能化監(jiān)控系統(tǒng)，對(duì)中跨合龍的傳感器類型及布置進(jìn)行研究，提出一種常用的布置方法。在計(jì)算理論方面，將合龍調(diào)平過程公式化，使決策過程減少人為判斷；對(duì)合龍段配切長(zhǎng)度的計(jì)算過程數(shù)學(xué)化，簡(jiǎn)化計(jì)算過程。最后通過某跨海大橋工程實(shí)例，驗(yàn)證該方法的可行性。結(jié)果表明，該方法現(xiàn)場(chǎng)可實(shí)施性高，誤差滿足工程實(shí)際要求，提高中跨合龍的施工效率。

關(guān)鍵詞：斜拉橋；中跨合龍；智能監(jiān)控系統(tǒng)；合龍段；監(jiān)控算法

中圖分類號(hào)：U448.27 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：2095-2945（2024）23-0048-04

Abstract： In this paper， the mid-span closure technology of long-span cable-stayed bridge is studied from two aspects： monitoring method and calculation theory. In terms of monitoring methods， an intelligent monitoring system for real-time monitoring is formed by using multi-data fusion theory. The sensor type and arrangement of mid-span closure are studied， and a common arrangement method is proposed. In the aspect of calculation theory， the leveling process of closure is formulated， which reduces the artificial judgment in the decision-making process， and the calculation process of matching and cutting length of closure section is mathematically simplified. Finally， the feasibility of the method is verified by an engineering example of a sea-crossing bridge. The results show that the method has high field implementability， the error meets the practical requirements of the project， and the construction efficiency of mid-span closure is improved.

Keywords： cable-stayed bridge; mid-span closure; intelligent monitoring system; closure section; monitoring algorithm

斜拉橋中跨合龍是指斜拉橋結(jié)構(gòu)中間跨的合龍過程。斜拉橋是一種特殊的橋梁結(jié)構(gòu)，其主要特點(diǎn)是通過斜拉索將橋梁的主梁與橋塔相連，形成一個(gè)穩(wěn)定的結(jié)構(gòu)。在斜拉橋多跨設(shè)計(jì)時(shí)，會(huì)將橋梁分成多個(gè)跨度，中跨即為其中的中間跨度。當(dāng)斜拉橋的主梁和橋塔完成建設(shè)后，中跨合龍即是將中跨的部分與兩側(cè)的跨度相連接，使整座橋梁形成一個(gè)完整的結(jié)構(gòu)。這個(gè)過程通常會(huì)通過吊裝、拼裝等方式進(jìn)行，確保中跨與兩側(cè)跨度的連接牢固穩(wěn)定。斜拉橋中跨合龍是整個(gè)斜拉橋建設(shè)過程中的重要環(huán)節(jié)，需要精確的測(cè)量、設(shè)計(jì)、施工，以確保橋梁的結(jié)構(gòu)安全和功能完善。斜拉橋作為一種現(xiàn)代化的橋梁結(jié)構(gòu)，具有較大的跨度和美觀的外形，中跨合龍的完成標(biāo)志著整座斜拉橋工程的順利進(jìn)行。……