How far should the deep foundation pit excavation be from the house?

For. As the main body of the foundation pit enclosure structure, the I-beam.

I50, I55 and I60 large I-beams are used. Before the excavation of the foundation pit, a percussion pile driver is used on the ground.

Drive into the ground along the design edge of the foundation pit, and the pile spacing is. If the formation is saturated silt and other soft formations, static pile drivers and vibrating pile drivers can also be used to sink piles.

When the foundation pit is excavated, a 50mm thick horizontal plank is inserted between the piles along with the excavation of the earthwork to block the soil between the piles. After the foundation pit is excavated to a certain depth, if the stiffness and strength of the cantilever I-beam are large enough, it is necessary to set up a waist beam.

and cross brace or anchor rod (cable), waist beam is mostly made of large channel steel, I-beam, cross brace can be made of steel pipe or composite steel beam.

If it is not deep, it is generally considered at a 45-degree angle, that is, the depth of the probe is equivalent to the free distance left. If the depth is more than 3 meters, or if there is water outflow, it should be considered to increase the insurance factor, i.e. to 2 times the distance.

It doesn't matter, the foundation pit has preventive measures. As for the distance between the new building and the building of your home, there is a regulation, and that is the requirement for daylight spacing. This is mandatory.

Distance = (1 2) * the difference between the elevation of the bottom surface of the original building foundation and the elevation of the bottom of the pit.

About 6 meters is the best, depending on the geological structure.

Do not pile up items or garbage that obstruct drainage within 6 meters around the building, and keep the drainage unobstructed.

Earthwork excavation, support and dewatering engineering of foundation pit (groove answer) with a depth of more than 5m (including 5m). Although the excavation depth does not exceed 5m, the geological conditions, surrounding environment and underground pipelines are complex, or the earthwork excavation and support of the foundation pit (groove) that affects the safety of adjacent buildings (structures).

DB11 489-2007 Landmark 4It is stipulated in the grading that the general distance from the upper edge of the foundation pit is not less than 2m, and the height of the spoil shall not be greater than the provisions of the safety inspection in the early answer. For deep foundation pits, poor soil quality, etc., it is necessary to look at the support design requirements.

The safety distance between the foundation pit and the surrounding buildings is at least 1:1.

This is determined by the rigidity angle, otherwise measures need to be taken. How much is the distance from the edge of the foundation pit to the house to belong to the safe distance, depending on the depth of the foundation pit, if the foundation pit is handled according to the specifications, it is not allowed to stack items within 3 meters. According to the theory of soil mechanics, the adjacent additional load range of the foundation pit will not be less than twice the depth of the foundation pit, that is, the safety distance should be at least twice the distance of the excavation depth of the foundation pit.

Note: The 1:1 distance is calculated from the base of the original building. Technical Code for Monitoring of Building Foundation Pit Engineering GB50497-2009, the first sentence:

To set up building points within the range of 1-3 times the depth of the foundation pit, which means that there is no need to arrange monitoring points if it is more than 3 times. (as shown in the image below).

The 12-meter-deep excavation of the foundation pit has a safe distance of three meters to adjacent buildings. According to the Ministry of Housing and Urban-Rural Development of the People's Republic of China on May 13, 29 issued the "dangerous sub-project safety management measures" in the subsidiary documents, deep foundation pit engineering is: (1) excavation depth of more than 5m (including 5m) of the foundation pit (groove) of earthwork excavation, support, dewatering engineering.

2) Although the excavation depth does not exceed 5m, the geological conditions, the surrounding environment and the underground pipeline are complex, or affect the safety of the adjacent buildings (structures) of the foundation pit (groove) of the soil trap square excavation, support, precipitation engineering normal safety distance is 3 meters, but the specific situation also depends on the soil conditions, foundation pit slope, support measures and other conditions.

The foundation pit is a temporary project, and its function is to provide a space for the masonry of the foundation to be carried out according to the location specified in the design. The amount of foundation pit excavation is calculated according to the volume of the foundation pit. Generally speaking, a deep foundation pit refers to a foundation pit with an excavation depth greater than or equal to 5m.

The calculation formula of foundation pit excavation is as follows:

1. No slope and no retaining plate: the foundation pit at this time is a cuboid or cylinder.

When it is a cuboid: the amount of excavation of foundation pit = (a + 2c) (b + 2c) h

When it is a cylinder: the amount of excavation of foundation pit = *r*r*h

2. Grading: The foundation pit at this time is a prism or a round platform.

When it is a prism: the amount of excavation of foundation pit = (A + 2C + Kh) (B + 2C + Kh) H + 1 3K * K * H * H * H.

When it is a round platform: the amount of excavation of foundation pit = 1 3 h (r*r + rr + r * r). <

Summary. The safety distance between the deep foundation pit excavation and the surrounding buildings should be maintained at least 2 meters. The safety distance from the excavation of the 12m deep foundation pit to the adjacent building is 3m.

According to the annex in the "Measures for the Safety Management of High-risk Sub-projects" issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China on May 13, 2009, deep foundation pit engineering is: (1) earthwork excavation, foundation pit (groove) support and dewatering engineering with an excavation depth greater than 5m (including 5m). (2) Although the excavation depth does not exceed 5m, the earthwork excavation, support and dewatering works of foundation pits (ditches) with complex geological conditions, surrounding environment and underground pipelines or foundation pits (ditches) that affect the safety of adjacent buildings (structures).

Pro, speed. The safety distance between the deep foundation pit excavation and the surrounding buildings should be maintained at least 2 meters. The safety distance from the excavation of the 12m deep foundation pit to the adjacent building is 3m.

According to the annex in the "Measures for the Safety Management of High-risk Sub-projects" issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China on May 13, 2009, the deep foundation pit engineering is: (1) earthwork Xintan excavation, excavation depth greater than 5m (including 5m) foundation pit (trough) support and dewatering engineering. (2) Although the excavation depth of Kaizheng rock does not exceed 5m, the earthwork excavation, support and dewatering engineering of the foundation pit (ditch) that affects the safety of adjacent buildings (structures) and underground pipelines are complex, the surrounding environment and underground pipelines.

What is the distance between the old building and the new 26-storey building?

Pro, speed. Good.

The best distance between the front and back of the 26th floor is about 30 meters. Generally, the spacing of high-rise residential buildings is greater than about 30 meters to meet the requirements of the specification, and the 26-story residential buildings belong to high-rise residences, so the spacing between buildings is about 30 meters to meet the needs of living. Generally speaking, residential buildings in ordinary communities can use "building height:

Careful potato distance between buildings = 1: Ratio calculation.

How many meters is the lateral distance of the building from the new 26-storey building.

Pro, speed. The long side of the two buildings is opposite, not less than 18 meters of the judgment hall. The long side of a building excavation is opposite to the end edge of another building, not less than 12 meters. The end edge of the two building is opposite, not less than 10 meters.

Dear, hello, I am happy to serve you to answer, I am a master of home problem solving, you consulted the problem, I make the following respects: for example, the foundation pit is 1 meter deep, then the distance from the building next to it is 2 meters wide is safe. At the scene, the reporter saw that the construction part was close to the wall of the community, which would definitely affect the safety of the wall.

The person in charge of the construction party said that the rectification will be carried out in accordance with the bright ruler buried construction plan issued by experts in the later stage.

Summary. Hello, I'm glad to answer for you, this mainly depends on the actual construction situation I have seen a lot of deep foundation pit construction sites Some of the adjacent buildings are only 10m away or even smaller As long as you decide to do a deep foundation pit next to a high-rise building, you must do a systematic safety evaluation before and then give the value of preparation and the protective measures to be taken for construction. The main thing is to prevent settlement, and there must be a construction plan that has been demonstrated by experts.

What is the safe distance between the excavation of the deep foundation pit and the adjacent buildings Urgently, please help.

Hello, I'm glad to answer for you, this mainly depends on the actual construction situation I have seen a lot of deep foundation pit construction sites, some of the adjacent buildings are only 10m away from the rising rock, or even smaller than the smile as long as the decision is made next to the high-rise building to do a deep foundation pit must be before the systematic safety evaluation and then give the value of the preparation and the protective measures taken by the construction of the year. The main thing is to prevent settlement, and there must be a construction plan that has been demonstrated by experts.

The foundations are obviously collapsing, and the walls are tilted, what can I do?

Hello, Hui Mao can generally use the pile foundation underpinning reinforcement method to reinforce, that is, arrange cast-in-place piles along both sides of the foundation, set up a lifting beam, and hold up the original foundation ring beam to prevent the foundation from continuing to sink. Then, according to the severity of the cracks in the wall, the grouting filling method (1:2 cement mortar) was used respectively. Reinforcement mesh reinforcement method (250mm 250mm 4-6 reinforcement mesh, fixed on both sides of the wall with through-wall reinforcement, plastered with 35mm thick M10 cement mortar or C20 fine stone concrete); Demolition and rebuilding (removing part of the brick wall and rebuilding it with a mortar higher than the original strength grade).

If the foundation of the house is sinking and causes tilting, then it is necessary to do a good job in strengthening the foundation of the house, and then do the house correction and correction. If the inclination of the house is not large, you can choose not to do the righting, if the inclination of the house is more obvious, then you need to do the righting. However, if the inclination of the house is very serious, the reinforcement company will evaluate the construction risk, and the risk will be too large.

When the foundation of the house is sinking, it is necessary to deal with it in time and find a professional reinforcement company to carry out the reinforcement construction.

The network is slow, so I'm sorry to see it.

Legal analysis: there is no clear provision that it should be decided according to the depth of the foundation pit, because the principle of soil mechanics shows that the load range of the foundation pit is more than 1 times the depth, for example: the basic depth is 3 meters, and the safety distance should be at least 6 meters, so as not to affect the stability of the house structure.

Legal basis: Regulations on the Quality Management of Construction Projects

Article 1 In order to strengthen the management of the quality of construction projects, ensure the quality of construction projects, and protect the safety of people's lives and property, these regulations are formulated in accordance with the Construction Law of the People's Republic of China.

Article 2 Those who are engaged in the new construction, expansion, reconstruction and other related activities of construction projects within the territory of the People's Republic of China and the implementation of supervision and management of the quality of construction projects must comply with these Regulations.

The term "construction project" as used in these Regulations refers to civil engineering, construction engineering, installation of pipelines and equipment, and decoration projects.