Method for defining and calculating compaction and settlement ratio so as to determine optimal compaction times

A technology of ramming-sink ratio and ramming number, applied in soil protection, construction, infrastructure engineering, etc., can solve problems such as waste of ramming energy and ineffective ramming of foundations, and achieve accurate calculation results.
CN104074181AInactive Publication Date: 2014-10-01ZHONGBEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHONGBEI UNIV
Publication Date
2014-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for defining and calculating the compaction and settlement ratio so as to determine optimal compaction times, belongs to the technical field of civil engineering foundation treatment, particularly relates to the rammer efficiency conversion aspect and aims at solving the technical problem and providing a method for defining the compaction and settlement ratio, using a rammer as a research object, calculating the compaction and settlement ratio so as to determine the optimal compaction times. Optical energy distribution selection and energy consumption reduction has important significance in the actual engineering. The technical scheme is that the compaction and settlement ratio (shown in description) is defined and calculated through a compaction test of the rammer, and the optimal compaction times are determined by drawing a compaction times-compaction and settlement ratio curve chart, wherein the b represents measured single-beat compaction and settlement amount, and the S represents rammer stroke number value calculated through integration. The ratio of each-beat actually-measured compaction and settlement amount b to a rammer stroke number value calculated value is defined as the compaction and settlement ratio lambda, a compaction times-compaction and settlement ratio curve is obtained, the optimal compaction times are analyzed and determined, and calculation is accurate, convenient and economic.
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Description

technical field

[0001] The invention defines and calculates the tamping-sink ratio to determine the optimal tamping number, belongs to the technical field of civil engineering foundation treatment, and specifically relates to the efficiency transformation of a tamping hammer. Background technique

[0002] The dynamic compaction method is a method of freely dropping a weight of tens of tons (generally 8-40t) from a height of tens of meters (generally 6-40m) to compact and strongly compact the foundation soil. The current situation is that the practice of dynamic compaction is developing rapidly, but there are still many ambiguities in the mechanism and design theory of dynamic compaction. The theory is far behind the practice. Issues such as energy distribution and construction optimization of dynamic compaction have always attracted attention.

[0003] At present, conventional methods for determining the number of ramming include the empirical method, the method of determini...

Claims

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