模块化装配式基础与沟道体系
By using a modular prefabricated foundation and trench system, and employing mortise and tenon structures and composite connection nodes, the problems of long construction cycles, difficulty in quality control, and high joint leakage rates in traditional cast-in-place and existing prefabrication technologies have been solved, achieving efficient and high-precision underground trench construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- STATE GRID TIANJIN ELECTRIC POWER COMPANY
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional cast-in-place concrete trenches have long construction cycles, are difficult to control in terms of quality, have high joint leakage rates, large dimensional deviations, and low construction efficiency. Existing prefabrication technologies are unable to achieve high-precision assembly and reliable connection, and cannot adapt to complex foundation conditions.
The system adopts a modular prefabricated foundation and trench system, including precast concrete foundation blocks, combined trench units and composite connection nodes. It uses mortise and tenon structures and stainless steel bolts for high-precision positioning and connection, and combines elastic sealing strips to achieve dynamic sealing.
It has achieved a significant reduction in construction cycle, improved quality and efficiency, excellent sealing performance, adaptability to complex foundation conditions, and reduced maintenance costs and material waste.
Smart Images
Figure CN224514271U_ABST
Abstract
Claims
1. A modular fabricated foundation and trench system, characterized by, include: Multiple precast concrete foundation blocks (101), each foundation block having a positioning boss (101a) on its upper surface. Multiple combined channel units (102) are assembled from side wall panels (102a) and bottom plates (102b). Elastic sealing strips (102c) are pre-embedded at the joints. The side of the side wall panel (102a) is provided with leveling bolt holes (102d). The composite connection node (103) includes a tenon structure (103a) disposed between the base block and the channel unit and a stainless steel bolt for passing through the tenon structure, for realizing vertical limiting and horizontal shear resistance connection.
2. The modular, fabricated foundation and trench system according to claim 1, wherein, The leveling bolt hole (102d) is equipped with an adjustable high-strength screw, with an adjustment range of 0-50mm and an accuracy of ±1mm.
3. The modular, fabricated foundation and trench system according to claim 1 or 2, wherein, The inner side of the side wall panel (102a) is provided with cable support rails, and the spacing of the rails is adjustable in a 50mm module.
4. The modular, fabricated foundation and trench system according to claim 1, wherein, The mortise and tenon structure (103a) is a trapezoidal dovetail tenon with an inclination angle α of 5° to 10°.
5. The modular, panelized foundation and trench system of claim 1, wherein, The elastic sealing strip (102c) is made of EPDM material, and its compression ratio is maintained between 30% and 40%.
6. The modular, fabricated foundation and trench system according to claim 1, wherein, The preload of the stainless steel bolt is not less than 50 N·m, and the exposed thread length is 2 to 3 turns.
7. The modular, fabricated foundation and trench system according to claim 1, wherein, The compressive strength of the base block (101) is not less than C30, and the thickness of the sidewall plate of the channel unit (102) is not less than 120mm.
8. The modular, fabricated foundation and trench system according to claim 1, wherein, The base block (101) is provided with anti-slip toothed ledges at the bottom, which is suitable for slope terrain of 0° to 15°.