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Method for calculating bearing capacity of vertical support column in reverse construction environment
The invention relates to a method for calculating the bearing capacity of a vertical support column in a reverse construction environment. The vertical support column is of a concrete filled steel tubular column and is used as an equivalent pile, and a pile body of the vertical support column is used as an actual pile; the method for calculating the bearing capacity is to calculate the slendernessratio lambda of the concrete filled steel tubular column, and the calculation formula of the slenderness ratio lambda is as illustrated in the description, wherein lc is the calculated length of theconcrete filled steel tubular column, and i is the converted gyration radius. According to the method for calculating the bearing capacity of the vertical support column in the reverse construction environment, based on the principle of pile-soil interaction, the formula for calculating the effective length of the steel vertical column is deduced through m values reflecting the difference of pilehole fillers and foundation soil types; and after being through numerical analysis, simulation test and engineering practice test, the formula for calculating the effective length of the steel vertical column is more comprehensive, reasonable and reliable than the formula of an augmented geometric length method. The converted gyration radius i is the standard calculated value, and therefore, according to the formula for calculating the effective length of the steel vertical column, the calculation formula of the slenderness ratio under the reverse construction condition is more reasonable andreliable as well.
一种逆作法施工环境下竖向支撑柱承载能力计算方法，所述竖向支撑柱为钢管混凝土柱且作为等效桩，竖向支撑柱的桩身作为实际桩，承载能力计算方法为求取钢管混凝土柱的长细比λ,所述长细比λ的计算公式为：l为钢管混凝土柱的计算长度，i为换算回转半径。本方法根据桩土共同作用原理，通过m值反应桩孔填料以及地基土类别的差异，所推导的逆作施工条件下钢立柱计算长度公式。经数值分析、模拟试验和工程实践检验，该公式较加大几何长度法计算公式更为全面、合理、可靠。换算回转半径i为规范计算值，故依据逆作施工条件下钢立柱计算长度公式，逆作施工条件下钢立柱长细比公式也更合理、可靠。
Method for calculating bearing capacity of vertical support column in reverse construction environment
The invention relates to a method for calculating the bearing capacity of a vertical support column in a reverse construction environment. The vertical support column is of a concrete filled steel tubular column and is used as an equivalent pile, and a pile body of the vertical support column is used as an actual pile; the method for calculating the bearing capacity is to calculate the slendernessratio lambda of the concrete filled steel tubular column, and the calculation formula of the slenderness ratio lambda is as illustrated in the description, wherein lc is the calculated length of theconcrete filled steel tubular column, and i is the converted gyration radius. According to the method for calculating the bearing capacity of the vertical support column in the reverse construction environment, based on the principle of pile-soil interaction, the formula for calculating the effective length of the steel vertical column is deduced through m values reflecting the difference of pilehole fillers and foundation soil types; and after being through numerical analysis, simulation test and engineering practice test, the formula for calculating the effective length of the steel vertical column is more comprehensive, reasonable and reliable than the formula of an augmented geometric length method. The converted gyration radius i is the standard calculated value, and therefore, according to the formula for calculating the effective length of the steel vertical column, the calculation formula of the slenderness ratio under the reverse construction condition is more reasonable andreliable as well.
一种逆作法施工环境下竖向支撑柱承载能力计算方法，所述竖向支撑柱为钢管混凝土柱且作为等效桩，竖向支撑柱的桩身作为实际桩，承载能力计算方法为求取钢管混凝土柱的长细比λ,所述长细比λ的计算公式为：l为钢管混凝土柱的计算长度，i为换算回转半径。本方法根据桩土共同作用原理，通过m值反应桩孔填料以及地基土类别的差异，所推导的逆作施工条件下钢立柱计算长度公式。经数值分析、模拟试验和工程实践检验，该公式较加大几何长度法计算公式更为全面、合理、可靠。换算回转半径i为规范计算值，故依据逆作施工条件下钢立柱计算长度公式，逆作施工条件下钢立柱长细比公式也更合理、可靠。
Method for calculating bearing capacity of vertical support column in reverse construction environment
一种逆作法施工环境下竖向支撑柱承载能力计算方法
CHEN WEIDONG (author) / QIAN LIPING (author) / ZHAO SHIYUN (author) / WANG JINGFENG (author) / YING HUIQING (author) / XIANG BINGQUAN (author) / ZENG WEI (author) / CHEN GANG (author) / YU BOJIANG (author) / LI CHEN (author)
2020-08-04
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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