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(中南建筑設(shè)計院股份有限公司， 武漢 430071）
［摘要］武漢天河國際機場T3航站樓由主樓、指廊、登機橋及T2-T3連廊等建筑組成。各建筑區(qū)域的結(jié)構(gòu)特點、地下情況、基礎(chǔ)形式、基底標(biāo)高不盡相同，且T3航站樓中部地下室有城鐵地鐵隧道下穿，形成共建區(qū)域，基礎(chǔ)設(shè)計復(fù)雜，施工難度大。通過多樁型的試驗樁工程及試驗樁結(jié)果的對比分析，并結(jié)合各建筑區(qū)域的荷載分布和地下情況，整個T3航站樓分區(qū)采取不同樁型、樁徑和樁長的樁基礎(chǔ)設(shè)計方案。新型擠擴樁承載力高，沉降變形小，經(jīng)濟性好。經(jīng)過多區(qū)域試驗樁反復(fù)驗證和研究，確定了在對單樁承載力需求較高的主樓范圍采用新型擠擴樁，其他區(qū)域采用常規(guī)樁型；分析了工程樁設(shè)計與施工的重難點；通過分析工程樁檢測成果數(shù)據(jù)，驗證了樁基礎(chǔ)設(shè)計的合理性。
［關(guān)鍵詞］武漢天河國際機場； 共建區(qū)域； 試驗樁； 擠擴樁； 工程樁
中圖分類號：TU973+.35文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2020)08-0022-08
Design and verification of pile foundation of terminal T3 of Wuhan Tianhe International Airport
XIE Qinglun, LI Ting, YUAN Liming, JI Zhifeng, WANG Xiaonan
（Central-South Architectural Design Institute Co., Ltd., Wuhan 430071， China）
Abstract:Terminal T3 of Wuhan Tianhe International Airport is composed of main building, airside concourse, passenger bridge and T2-T3 corridor. The structural characteristics, underground conditions, foundation forms and base elevation of each building area are different, and there are five subway tunnels under the central basement of terminal T3, forming a joint construction area. The foundation design is complex and the construction is difficult. Through the comparison and analysis of multi pile test pile engineering and test pile results, combined with the load distribution and underground conditions of each building area, the whole terminal T3 area adopts different pile foundation design schemes with different pile types, pile diameters and pile lengths. The new squeezed-enlarged pile has high bearing capacity, small settlement deformation and good economy. Through the repeated verification and research of multi area test piles, the new type of squeezed-enlarged pile was used in the main building area with high demand for single pile bearing capacity, and the conventional piles were used in other areas; the key and difficult points of engineering pile design and construction were analyzed; the rationality of pile foundation design was verified by analyzing the data of engineering pile test results.
Keywords:Wuhan Tianhe International Airport; joint construction area; test pile; squeezed-enlarged pile; engineering pile
作者簡介：謝慶倫，碩士，高級工程師，Email: 175848337@qq.com。
