Curved foundation pit excavation shaping device

By using foundation pit edge templates and curved surface control templates during the excavation of curved foundation pits, combined with mechanical and manual shaping, the problems of slope elevation and alignment control in the excavation of curved foundation pits were solved, achieving efficient control of foundation elevation and improvement of slope bearing capacity.

CN224338258UActive Publication Date: 2026-06-09CHINA RAILWAY NO10 ENGINEERING GROUP THIRD CONSTRUCTION CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY NO10 ENGINEERING GROUP THIRD CONSTRUCTION CO LTD
Filing Date
2025-07-08
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing technologies, the excavation of irregular curved foundation pits suffers from poor quality control of slope elevation and alignment, resulting in insufficient slope bearing capacity and significant construction disturbance, which affects the quality of subsequent concrete pouring.

Method used

A curved excavation and shaping device is adopted, including a pit edge template and a pit curved surface control template. By fitting the control plate with the pit slope and cooperating with the limiting baffle, the slope elevation and alignment are ensured to meet the design requirements. Support components are used to keep the template stable. Combined with mechanical excavation and manual shaping, precise control of the base elevation is achieved.

Benefits of technology

It effectively solved the deviations in slope elevation and alignment during the excavation of irregular curved foundation pits, reduced construction disturbance, improved slope bearing capacity, and ensured the quality of concrete pouring.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224338258U_ABST
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Abstract

This utility model relates to an auxiliary device for excavating curved foundation pits, and discloses a curved foundation pit excavation shaping device, including a device body. The device body includes a foundation pit edge template (1) horizontally set around the edge of the foundation pit and a foundation pit curved surface control template (2) that can fit onto the curved surface of the foundation pit. The foundation pit curved surface control template (2) includes a control plate (201) that is arc-shaped and flat. The upper end of the control plate (201) can abut against the lower end of the foundation pit edge template (1), and the control plate (201) can extend from the foundation pit edge template (1) along the foundation pit slope to the bottom of the foundation pit. The curvature of the control plate (201) is consistent with the design curvature of the foundation pit curved surface. This utility model effectively solves the deviation of the elevation and line shape of the excavation slope of irregular curved foundation pits by using the curved foundation pit excavation shaping device for comparison during foundation pit excavation, while ensuring that the curved slope has low disturbance and bearing capacity, and fully meets the construction requirements.
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