Cottage with landslide
By conducting detailed ground surveys and using deep piles to establish wall-shaped foundations parallel to the expected slip-off direction, the challenges of building on steep slopes are addressed, ensuring structural stability and safety while minimizing land alteration.
Patent Information
- Application Number
- JP2023195509
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-10-27
- Publication Date
- 2025-05-13
AI Technical Summary
Building on steep slopes poses significant challenges due to the risk of landslides and soil instability, as existing methods often require extensive land alteration and may not adequately address soil pressure and sediment slip-off issues.
The solution involves conducting a detailed ground survey to determine the bearing capacity and soil conditions, then using deep piles to establish wall-shaped foundations parallel to the expected slip-off direction, minimizing land alteration and soil pressure on the foundation.
This approach allows for the construction of residential buildings on steep slopes with reduced risk of landslides, maintaining the natural terrain while ensuring structural stability and safety during earthquakes.
Smart Images
Figure 2025073940000001_ABST
Abstract
Description
[Technical field]
[0001] House design on steep slope Summary of the Invention
[0002] The piles are driven deep into the solid layer of earth below the layer of soil that is expected to slide, and the foundation is then raised from there to support the building. After that, a hazard map was made, and when we looked at it, we realized that the steep slope was designated as a "special alert zone." However, the local government said that we could build a house for our own residence. How to solve the problem The bridge piers that support the bridge stand in the flow of the river. Taking a hint from that, we came up with the idea of a foundation that stands in the flow of earth and sand. 1. First, a bearing capacity survey is conducted to thoroughly examine the condition of the strata. 2. Drive piles deep into solid ground below the layer of soil that is expected to slide. 3. Build the foundation on the piles, trying not to change the shape of the land as much as possible. 4. Assuming that the soil will slide down, the foundation of the wall is raised parallel to the sliding soil so as to minimize the earth pressure it receives from the soil. 5. Earth pressure is applied to the area of the wall of a wall-like foundation multiplied by the depth of the sliding soil. 6. Place the slab on top of the two wall foundations. 7. Build your residence on top of the slab. [Brief description of the drawings]
[0003] [Figure 1] A-1 Bird's-eye view - Shows the overall picture of the mountain lodge built on a steep slope. - An RC slab will be placed on top of two wall-like foundations to create an artificial ground, on which the wooden mountain lodge will be built. - From the road, an artificial RC ground will be built on top of the wall-like foundations to serve as a parking space. - The artificial ground for the parking lot will be connected to the artificial ground on which the mountain lodge stands. - Guard rails will be installed on the walking areas of both artificial grounds. [Diagram 2]A-2 Cross-section - There is a villa site on a steep mountain slope, with a road to the site already constructed. - An artificial base will be built on top of the wall-like foundation to serve as a parking lot. A wall-like foundation will be built beyond the parking lot, and an artificial base will be built on top of that. - A wooden villa will be built on top of that artificial base. - Natural light will enter the villa from the central switch part of the roof. - Solar panels will be placed on the roof, making it possible to generate electricity. [Diagram 3] A-3 Detailed drawing - A ground survey is carried out to identify soil layers. - The locations of each ground and water layer, such as crumbling ground, layers through which water flows, and hard ground, are determined three-dimensionally in plan and cross section. - The location for the wall-shaped foundation is determined, and the type of piles is determined. - Piles are driven deep into the hard ground, and a wall-shaped foundation is erected on top of them. - Two rows of piles are driven deep into the hard ground, and two wall-shaped foundations are erected on top of them. - The two wall-shaped foundations are connected with triangular beams, and an artificial ground is created on top of them. - A wooden mountain lodge is built on top of the artificial ground. - Wall-shaped foundation: If the soil collapses parallel to the slope, it is assumed that the only part that will be subjected to earth pressure is the thickness of the wall. [Figure 4] A-4 Image - A mountain lodge on a steep slope with a good view of the mountains, where there is no flat area to build a lodge on. - When cutting and piling up the earth, which can cause landslides, cannot be carried out. - An artificial foundation is created on piles and a wall-like foundation on such land, without changing the shape of the land as much as possible, and a lodge is built on top of that. - The lodge has an outstanding view, and is like a tree house in the forest. - In the event of an earthquake, the structure itself absorbs the energy of the earthquake.
Claims
[Claim 1] A way to ensure that buildings remain standing even if soil and sand flow in steep slopes designated as "special alert areas."