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Large-size sample sampling device for undisturbed soil at bottom of foundation pit and using method of large-size sample sampling device
The invention provides a large-size sample sampling device for undisturbed soil at the bottom of a foundation pit and a using method of the large-size sample sampling device. The device comprises a sampling box and a bottom cutting frame, wherein an open end is arranged at the lower part of the sampling box; the bottom cutting frame is arranged outside the sampling box, and the bottom end part of the bottom cutting frame is propped against the open end in a sliding manner and is used for closing the open end; U-shaped sliding chutes are formed in two ends of the upper part of the sampling box; supporting strips are arranged at positions, which correspond to the U-shaped sliding chutes, of the upper part of the bottom cutting frame; and the supporting strips are connected with the U-shaped sliding chutes in an inserted manner. According to the device disclosed by the invention, undisturbed soil samples of different depths are obtained by utilizing depth conditions created by foundation pit excavation, the device does not have requirements on independence of the soil samples and is suitable for sampling various sandy soils and clays, particularly soil bodies such as clean sandy soils and soft soils which cannot stand independently.
本发明提出了一种基坑底原状土大尺寸试样取样装置及其使用方法，所述装置包括取样箱和切底框，所述取样箱下部具有开口端，所述切底框设于取样箱外部，且其底端部与开口端滑动抵接，用于闭合所述开口端，所述取样箱上部两端设有U形滑槽，所述切底框上部与U形滑槽相对应位置设有支撑条，且所述支撑条和U形滑槽插接连接。本发明利用基坑开挖创造的深度条件获得不同深度的原状土样，对土样自立性没有要求，适合各类砂土和黏土，特别是净砂土、软土等无法自立的土体取样。
Large-size sample sampling device for undisturbed soil at bottom of foundation pit and using method of large-size sample sampling device
The invention provides a large-size sample sampling device for undisturbed soil at the bottom of a foundation pit and a using method of the large-size sample sampling device. The device comprises a sampling box and a bottom cutting frame, wherein an open end is arranged at the lower part of the sampling box; the bottom cutting frame is arranged outside the sampling box, and the bottom end part of the bottom cutting frame is propped against the open end in a sliding manner and is used for closing the open end; U-shaped sliding chutes are formed in two ends of the upper part of the sampling box; supporting strips are arranged at positions, which correspond to the U-shaped sliding chutes, of the upper part of the bottom cutting frame; and the supporting strips are connected with the U-shaped sliding chutes in an inserted manner. According to the device disclosed by the invention, undisturbed soil samples of different depths are obtained by utilizing depth conditions created by foundation pit excavation, the device does not have requirements on independence of the soil samples and is suitable for sampling various sandy soils and clays, particularly soil bodies such as clean sandy soils and soft soils which cannot stand independently.
本发明提出了一种基坑底原状土大尺寸试样取样装置及其使用方法，所述装置包括取样箱和切底框，所述取样箱下部具有开口端，所述切底框设于取样箱外部，且其底端部与开口端滑动抵接，用于闭合所述开口端，所述取样箱上部两端设有U形滑槽，所述切底框上部与U形滑槽相对应位置设有支撑条，且所述支撑条和U形滑槽插接连接。本发明利用基坑开挖创造的深度条件获得不同深度的原状土样，对土样自立性没有要求，适合各类砂土和黏土，特别是净砂土、软土等无法自立的土体取样。
Large-size sample sampling device for undisturbed soil at bottom of foundation pit and using method of large-size sample sampling device
一种基坑底原状土大尺寸试样取样装置及其使用方法
SHEN ZHIFU (author) / ZHAO YIXIN (author) / WANG ZHIHUA (author) / WU HENGYU (author) / GAO HONGMEI (author)
2021-04-16
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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