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 陳杭生¹，陳杭旭²
(1 浙江省建筑設(shè)計(jì)研究院，杭州310006; 2 浙江建設(shè)職業(yè)技術(shù)學(xué)院，杭州311231)

[摘要] 勘察方提供給設(shè)計(jì)方的單樁極限承載力與試樁取得的值普遍會(huì)有差異，有時(shí)差額還比較大。如果我們?cè)诠I(yè)廠房的每個(gè)柱下樁基均設(shè)柱下樁，并以此改變柱基的承臺(tái)形式，同時(shí)在以后的沉樁施工過程中改變沉樁順序，合理取用試樁的每級(jí)加荷值及試樁加荷的最大值，那么在不影響工期情況下，用工程樁做試樁就能起到用非工程樁做試樁的同樣效果，得出試樁的確切極限承載力從而可以合理調(diào)整勘察數(shù)據(jù)。
[關(guān)鍵詞] 柱下樁；樁的極限承載力；3～9樁承臺(tái)

Study on the buildingpiles instead of piles testing in mul-piles cap of factory building
Chen Hangsheng¹,  Chen Hangxu²
(1Zhejiang Prov. Institute of ArchitecturaI Design and Research, Hangzhou 310006, China; 2 Zhejiang College of Construction, Hangzhou 311231, China)

Abstract: It is common that the pile bearing capacity value provided by the survey or to the designer ofen differs from that the pile bearing capacity site test and sometimes the difference could even be fairly substantial. Suppose that piles and the relevant caps are applied in a factory building, we can achieve the pile ultimate bearing capacity by means of adjusting the pile driven sequence and careful choosing the increment and maximum value of loads acting on the buildingpiles instead of piles testing within the project time limit so that the pile bearing capacity in the survey report can be reasonably modified.
Keywords: pile under the column;  pile ultimate bearing capacity;  foundation used for the 3～9 piles