Pile foundation theory, lime soil pile carrying capacity and lime soil pile stirring impacting operation system

Abstract

A pile foundation container principle and a compression modulus Es as standard control indexes are breakthroughs of a pile foundation theory, a lime soil pile periphery soil limit shaft resistance standard value qsik(kpa) and a pipe end soil ultimate tip resistance standard value qpk(kpa) are same with the pile periphery soil limit shaft resistance standard value qsik(kpa) and the pipe end soil ultimate tip resistance standard value qpk(kpa) in terms of 5.3.5 and 5.3.6 of the prior building pile foundation technical standards JGJ94-2008. A tip resistance building designed according to a pile body compression resistant strength is same. The carrying capacity of a single lime soil pile is 1.57 times that of the single pile in the lime soil well pile design and construction standards (DBJ-3-87) in ShanXi province, and the shaft resistance of the former is 1.97 times that of the latter. Compared with a concrete pile, basic construction investment of 10.480 billion yuan is saved for the nation. The Lime soil pile stirring impacting operation system is the invention for manufacturing lime soil pile patent construction equipment. The influence of manual factors on the pile body construction quality is eliminated from the construction demand program and the speed, quality and efficiency are improved.

Description

Background technique [0001] 1.1. The status quo of lime-soil pile concrete pouring pile [0002] 1.1.1. The pile foundation theory is currently in the thinking stage, and the inventor has also thought about the pile foundation theory. [0003] 1.1.2. At present, the standard value q of the limit end resistance of concrete pouring pile soil at the end of the pile pk (kPa), standard value of limit lateral resistance of pile surrounding soil q sik (kPa), standard value q of end resistance of lime-soil piles before 1998 pk (kPa), side resistance standard value q sik (kPa) [0004] 1.1.2.1. Similarities and differences between concrete pouring piles and lime-soil piles [0005] 1.1.2.1.1, the same [0006] The principle of force is the same: the lime soil of the lime soil pile undergoes the reaction of the "physical and chemical principle set" to generate salt, and the strength has become a semi-consolidated state. Compared with concrete cast-in-situ piles, they are all pile...

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Problems solved by technology

[0085] 1.2.2.4. Before 1998, the methods of manual compaction of gray soil piles in Baoji City were backward, and the compaction work was insufficient

[0086] 1.2.2.5. Objectively speaking, although there are many discussions about artificially compacted piles, in Baoji, regardless of the safety and stability of buildings in the form of multi-layer frame or brick-concrete lime-soil pile foundation, management and technology abandon this foundation form. The foundation type selection in subsidence loess areas is passive in terms of technical productivity development

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