Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a foundation soil compaction nondestructive testing method. The method utilizes a foundation soil compaction nondestructive testing device, and comprises the following steps that 1, a valve B is opened to enable a mercury column pipe section of a mercury column pressure measuring pipe to communicate with an air isolation hood, then a valve A is opened, and a vacuum pump isstarted to start pumping air at the same time, so that negative pressure is formed inside the air isolation hood, when a mercury column in the mercury column pipe section rises to the zero position ofa flush scale, the valve A is closed, at the moment, outside air permeates into the air isolation hood through the interiors of soil bodies at testing points, the height of a mercury column of a filling pipe section is changed up and down therewith, and an intelligent measurement and control unit automatically detects and processes data to obtain the air permeation coefficient of the soil bodiesat the testing points; and 2, individual testing point locations are randomly selected on site to sample the dry density on the testing point locations by a cutting ring to solve the compaction of thefoundation soil at the point locations. The method has the advantages of being high in detection speed, high in detection precision and simple and convenient in operation, and not capable of causingapparent damage to a rolled foundation.
本发明公开了一种地基土压实度无损检测方法，利用一种地基土压实度无损检测装置，步骤包括：步骤1、先将B阀开启使汞柱测压管汞柱管段与隔气罩连通，然后开启A阀，同时启动真空泵开始抽气，使隔气罩内部形成负压，待汞柱管段中的汞柱升至平齐标尺零位时关闭A阀，此时外界空气通过测点土体内部渗透进隔气罩中，加注管段的汞柱高度随之上下变化，智能测控单元自动检测并进行数据处理，得到该测试点位土体的渗气系数；步骤2、在现场随机的选取个别测试点位进行环刀取样测试点位上的干密度，求得该点位处地基土的压实度。本发明的方法检测速度快，检测精度高，操作简便，且不会对已碾压完成的地基造成表观破坏。
The invention discloses a foundation soil compaction nondestructive testing method. The method utilizes a foundation soil compaction nondestructive testing device, and comprises the following steps that 1, a valve B is opened to enable a mercury column pipe section of a mercury column pressure measuring pipe to communicate with an air isolation hood, then a valve A is opened, and a vacuum pump isstarted to start pumping air at the same time, so that negative pressure is formed inside the air isolation hood, when a mercury column in the mercury column pipe section rises to the zero position ofa flush scale, the valve A is closed, at the moment, outside air permeates into the air isolation hood through the interiors of soil bodies at testing points, the height of a mercury column of a filling pipe section is changed up and down therewith, and an intelligent measurement and control unit automatically detects and processes data to obtain the air permeation coefficient of the soil bodiesat the testing points; and 2, individual testing point locations are randomly selected on site to sample the dry density on the testing point locations by a cutting ring to solve the compaction of thefoundation soil at the point locations. The method has the advantages of being high in detection speed, high in detection precision and simple and convenient in operation, and not capable of causingapparent damage to a rolled foundation.
本发明公开了一种地基土压实度无损检测方法，利用一种地基土压实度无损检测装置，步骤包括：步骤1、先将B阀开启使汞柱测压管汞柱管段与隔气罩连通，然后开启A阀，同时启动真空泵开始抽气，使隔气罩内部形成负压，待汞柱管段中的汞柱升至平齐标尺零位时关闭A阀，此时外界空气通过测点土体内部渗透进隔气罩中，加注管段的汞柱高度随之上下变化，智能测控单元自动检测并进行数据处理，得到该测试点位土体的渗气系数；步骤2、在现场随机的选取个别测试点位进行环刀取样测试点位上的干密度，求得该点位处地基土的压实度。本发明的方法检测速度快，检测精度高，操作简便，且不会对已碾压完成的地基造成表观破坏。
Foundation soil compaction nondestructive testing method
地基土压实度无损检测方法
02.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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