MEASURES TO PREVENT HOLE WALLS
In recent years, along with the development of high-rise building construction technology, excavation wall reinforcement technology has been applied in many places across the country. In the excavation wall reinforcement process, measures to prevent excavation wall erosion are always focused on and implemented extremely carefully. In the article below, we will help you learn more about measures to prevent excavation wall erosion. Let's refer to the article below with Hung Nghiep Phu for more details!
1. Principles of anti-earth wall excavation
Chống vách đất hố đào yêu cầu nhiều công đoạn đảm bảo đúng kỹ thuật
Before learning about the method of supporting the excavation wall, you need to understand the principles when constructing this stage.
To stabilize the excavation wall during the construction process at a reasonable cost, construction units must choose the method of supporting the wall according to the following principles:
- Must keep the excavation wall stable and safe during the construction process
- Must be suitable for the excavation method and underground construction technology
- Simple construction with the most optimal price
- Always pay attention to the ability to reuse after the project is completed
Understanding these principles, the implementation of supporting the excavation wall will be technically correct and ensure the quality of the project.
2. Measures to prevent earthen wall excavation
Drive the piles at a distance of 0.8 - 1.5m and then join the sheets there. The piles are usually I or H shaped steel piles.
Applied for shallow holes, small soil pressure, no strong underground water flow.
Next, drive the steel sheet piles without support to work in the form of a cantilever, applied when the excavation is shallow, there is underground water. The steel sheet piles are recovered by a pile puller or tower crane after the basement construction is completed.
Chống vách vách đất hố đào thường được áp dụng khá biến trong thi công xây dựng hầm.
Steel piles are driven into the ground to the full design depth. As the excavation progresses, the dome face is placed between the piles by spraying concrete mortar onto the soil wall to form small domes, with the feet stepping on the piles to hold the soil into the foundation pit. This method is applied when the soil is loose, there is no groundwater or soft soil.
Next, the construction unit uses bored piles, drilled together to form a soil wall, then proceeds to dig the soil. This method is applied when the excavation depth is large, the soil pressure is large.
Using walls in the ground, the wall is constructed by the bored method to form a closed wall surrounding the entire structure.
Directly support the bottom of the excavation pit, usually support the top of the bored pile or Barette pile when the excavation pit is large, less affecting the ventilation and construction process of the basement.
Next, use anti-sway to hold the opposite walls when their distance is narrow. Use concrete anchors to anchor underground when anchoring is allowed.
3. Note when digging the hole
Here are some things to consider when digging a foundation pit:
- When digging a foundation pit or trench without a slope, a support system must be installed according to regulations.
- For large foundation pits, a support system must be calculated and designed.
- Dug foundation pits and trenches in wet or sandy soil that is prone to landslides; must use boards that fit together tightly and must be driven at least 0.75 m deep into the bottom of the pit.
- Dug foundation pits and trenches in sandy soil must be calculated and designed separately; including measures to reinforce the support wall and lower the groundwater level.
- Dug foundation pits and trenches right next to old pits that have been filled with soil; but the filled soil is not stable, measures must be taken to reinforce the support wall firmly; and during the digging process, the condition of the support wall must be regularly observed.
4. Introducing a reputable design & construction consulting service provider
The importance of construction units is undeniable, their reputation will ensure the quality and aesthetics of your project. Currently, there are many units providing design and construction services to meet the increasing construction needs in our country. Therefore, finding a reputable unit is not easy and requires you to spend time researching. In the selection process, you need to research carefully and ensure that the accompanying unit must have high expertise, many years of experience, have a clearly signed contract, transparent costs, ... To help customers save time searching, Hung Nghiep Phu Construction Investment Co., Ltd. is confident that it will be the best choice for you.
Hung Nghiep Phu Construction Investment Co., Ltd. with the mission of providing the best solutions and services, building a prosperous community with customers, Hung Nghiep Phu is gradually affirming its brand through sincere cooperation, with a leadership team with ethical capacity, creativity, high expertise and strategic vision. Hung Nghiep Phu owns a team of skilled, highly qualified employees who will bring customers the best quality technology.
Hung Nghiep Phu Construction Investment Co., Ltd. - specializes in constructing civil and industrial works. We look forward to accompanying customers in construction projects as well as continuous procedures such as planning diagrams, applying for construction permits, completing procedures, applying for fire prevention and fighting certificates, ... If you have any questions or are in need of design, completing procedures, please contact us immediately for free consultation!
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