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（中鐵第一勘察設(shè)計(jì)院集團(tuán)有限公司， 西安 710043）

［摘要］以西寧火車站地下配套建設(shè)工程為依托，結(jié)合鹽湖鹵水環(huán)境中混凝土的腐蝕類型和腐蝕機(jī)理，依據(jù)場(chǎng)地實(shí)際結(jié)構(gòu)物所面臨的腐蝕環(huán)境，從設(shè)計(jì)與施工兩方面給出了混凝土抗腐蝕設(shè)計(jì)的總體思路。即選用高性能混凝土、提高保護(hù)層厚度，并依據(jù)各構(gòu)造部位的自身特點(diǎn)采取對(duì)應(yīng)的附加抗腐蝕手段，來(lái)提高混凝土結(jié)構(gòu)的耐久性和穩(wěn)定性。最后通過(guò)開(kāi)展混凝土抗腐蝕試驗(yàn)，驗(yàn)證了工程所用高性能混凝土在鹽湖鹵水環(huán)境中擁有極佳的抗腐蝕能力。

［關(guān)鍵詞］鹽湖鹵水；高性能混凝土；耐久性；抗腐蝕性設(shè)計(jì)；單軸抗壓試驗(yàn)

中圖分類號(hào)：TU375文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)09-0079-05

Corrosion resistance analysis of underground concrete structures in salt lake brine environment

MA Zhenting

（China Railway First Survey and Design Institute Group  Co., Ltd., Xi’an 710043, China)

Abstract:Based on the underground supporting construction project of Xining Railway Station, combined with the corrosion type and mechanism of concrete in salt lake brine environment, and according to the corrosive environment faced by the actual structure of the site, the general idea of concrete anti-corrosive design was given from two aspects of design and construction. In order to improve the durability and stability of concrete structures, high-performance concrete was selected, the thickness of protective layer was increased, and correspondingly additional anti-corrosion measures were adopted according to the characteristics of each structural part. Finally, the corrosion resistance test of concrete was carried out to verify that the high-performance concrete used in the project has excellent corrosion resistance in salt lake brine environment.

Keywords:salt lake brine; high-performance concrete; durability; anti-corrosive design; uniaxial compression test

作者簡(jiǎn)介：馬振庭，學(xué)士，工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:317785082@qq.com。