A deep foundation pit soil taking construction method using a crown beam support pier station position

Abstract

The application provides a deep foundation pit soil taking construction method using a soil taking equipment with a corbel support station, comprising the following steps: step 1) designing the support positioning and quantity in the corbel design stage in the deep foundation pit construction; step 2) performing the support construction synchronously with the corbel construction; and step 3) performing the deep foundation pit soil taking operation by the soil taking equipment at the support station. The application supports the soil taking equipment by the reinforced concrete support on the corbel, reduces the land occupation of the soil taking equipment in the construction site, fully utilizes the space in the limited construction land, and improves the construction efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deep foundation pit construction, and particularly relates to a deep foundation pit soil taking construction method using a crown beam supporting pier station position. BACKGROUND

[0002] In the earthwork excavation construction of a narrow deep foundation pit, excavators or soil taking machines often cannot enter the site for operation due to the inability to set up a ramp, and can only take soil on the construction road at the top of the foundation pit. However, in a complex surrounding environment, multiple projects are often simultaneously constructed in a site, the construction road is relatively tense, and in an extreme case, two projects may share a construction road, resulting in a narrow and congested road and causing construction efficiency to decrease. SUMMARY

[0003] In order to overcome the problem in the prior art that the surrounding environment of a deep foundation pit is complex, the construction site is small, the construction road is tense, the soil taking equipment cannot be provided with a construction site, and the deep foundation pit soil taking efficiency is low, the present application provides a deep foundation pit soil taking construction method using a crown beam supporting pier station position. The deep foundation pit soil taking efficiency is improved.

[0004] A deep foundation pit soil taking construction method using a crown beam supporting pier station position, comprising the following steps:

[0005] Step 1) Designing the positioning and quantity of piers in the design stage of a crown beam in the construction of a deep foundation pit;

[0006] Step 2) Pier construction performed synchronously with the construction of the crown beam;

[0007] Step 3) Soil taking equipment stationing on the piers and performing deep foundation pit soil taking operation.

[0008] Further, in step 1), in the engineering design stage, the number of pairs of reinforced concrete piers designed above the crown beam in the soil taking area between the supports in the deep pit and the distance between each pair of reinforced concrete piers are determined according to the cubic number of the deep foundation pit soil taking, design drawings and the distance between the legs of the soil taking equipment.

[0009] Further, in step 2), during the construction of the crown beam, the reinforced concrete piers are synchronously bound with the reinforcement of the lower crown beam, are anchored into each other, and then are poured with concrete to form an integral whole.

[0010] Further, in step 3), the soil taking equipment enters the site, moves to the specified reinforced concrete pier position, places two legs close to the deep foundation pit side on two reinforced concrete piers to provide support, and starts deep foundation pit soil taking operation.

[0011] Further, the deep foundation pit is a narrow deep foundation pit.

[0012] Further, the soil taking equipment is a car crane with outriggers or a grab bucket machine with outriggers.

[0013] The crown beam is supported by the reinforced concrete support pier, the land occupation of the soil taking equipment in the construction site is reduced, the soil taking equipment takes soil on one side of the deep foundation pit, does not occupy the construction road to take soil into the deep foundation pit, effectively relieves the traffic pressure of the construction road, and the soil taking equipment is closer to the deep foundation pit, so that a soil taking equipment with smaller self weight and shorter arm length can be selected, thereby saving cost and improving work efficiency.

[0014] Figure 1 is a schematic view of the position structure of the crown beam support pier of the present application.

[0015] Explanation of symbols in the drawings:

[0016] 1. Crown beam, 2. Support pier, 3. Concrete support, 4. Ground. DETAILED DESCRIPTION

[0017] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0018] Wherein, the drawings are only used for exemplary illustration, and the representation is only a schematic view, not a physical view, and cannot be understood as a limitation on the present patent; in order to better illustrate the embodiments of the present application, some components in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0019] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0020] In the description of this patent, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] A method for deep foundation pit soil extraction using soil extraction equipment with capped beam support piers includes the following steps:

[0022] Step 1) Design the location and quantity of supports during the capping beam design stage in deep foundation pit construction;

[0023] Step 2) Construction of the pier supports, carried out simultaneously with the construction of the capping beam;

[0024] Step 3) Position the soil extraction equipment on the support pier and carry out the deep foundation pit soil extraction operation.

[0025] In existing deep foundation pit excavation construction, ramps are often required for excavators and soil-boring equipment to access the construction site for excavation and soil removal. However, a common situation is that ramps cannot be built for deep foundation pits, forcing excavators and soil-boring equipment to excavate and remove soil from the construction road at the top of the pit. This results in limited construction space and congested construction roads, leading to low excavation efficiency. This invention proposes a deep foundation pit soil-boring construction scheme utilizing capping beam supports, as described above. Supports are installed on the capping beam, allowing excavators and soil-boring equipment to stand on the supports and perform soil removal on one side of the deep foundation pit. This reduces site occupation and infrequent use of construction roads, improving soil removal efficiency. Compared to existing deep foundation pit excavation construction methods, this method has the following advantages: 1. It effectively widens the construction road with lower support preparation costs, reducing the occupation of the construction road by on-site machinery and enhancing road capacity to improve construction efficiency. 2. Since the soil extraction equipment is closer to the foundation pit, the requirements for the length of the mechanical arm and its own weight are reduced. Shorter and smaller machines can be selected to save costs.

[0026] Furthermore, such as Figure 1 As shown, in step 1), the specific operation is as follows: during the engineering design stage, based on the cubic number of soil excavated from the deep foundation pit, the design drawings, and the distance between the legs of the soil excavation equipment, the number of pairs of reinforced concrete supports designed above the cap beam of the soil excavation area between the supports in the deep pit, as well as the distance between each pair of reinforced concrete supports, are determined.

[0027] Furthermore, such as Figure 1As shown in step 2), during the construction of the cap beam, the reinforced concrete support and the reinforcing bars of the cap beam below are tied together synchronously and anchored into each other, and then concrete is poured to form a whole.

[0028] Furthermore, such as Figure 1 As shown, in step 3), the soil removal equipment enters the site, moves to the designated reinforced concrete support position, and places the two legs closest to the deep foundation pit on the two reinforced concrete supports to provide support. The soil removal equipment then begins the deep foundation pit soil removal operation.

[0029] Furthermore, the deep foundation pit is a long and narrow deep foundation pit. This solution is generally applicable to deep foundation pit excavation construction, especially suitable for earthwork excavation projects where the deep foundation pit is long and narrow. In the construction of long and narrow deep foundation pits, the construction site is more confined and limited, which is particularly advantageous for setting up supports on the capping beam. Soil removal equipment positioned on the supports can then carry out soil removal operations, improving construction efficiency.

[0030] Furthermore, the soil-removing equipment is a truck crane with outriggers or a grab bucket with outriggers. In this embodiment, the soil-removing equipment is a grab bucket with outriggers.

[0031] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for ease of description.

Claims

1. A deep foundation pit soil taking construction method using a soil taking equipment with a crown beam support pier station position, characterized in that, The method comprises the following steps: Step 1) Designing the position and number of support piers in the design stage of the corbel during deep foundation pit construction, in the engineering design stage, according to the cubic number of soil removal in the deep foundation pit, design drawings and the distance between the soil removal equipment support legs, the number of steel reinforced concrete support piers designed above the corbel in the soil removal area between the supports in the deep pit and the distance between each pair of steel reinforced concrete support piers are determined; Step 2) Simultaneously constructing the support piers with the corbel construction, during the corbel construction, the steel reinforced concrete support piers are simultaneously bound with the steel reinforcement of the lower corbel, are mutually anchored, and then the concrete is poured to form an integral whole; Step 3) Positioning the support piers of the soil removal equipment and performing the deep foundation pit soil removal operation.

2. The method according to claim 1, wherein the method is characterized by, In Step 3), the soil removal equipment enters the site, moves to the specified steel reinforced concrete support pier position, places two support legs close to one side of the deep foundation pit at two steel reinforced concrete support piers to provide support, and the soil removal equipment starts the deep foundation pit soil removal operation.

3. The method according to claim 1, wherein the method is characterized by, The deep foundation pit is a narrow and long deep foundation pit.

4. The method according to any one of claims 1 or 2, wherein, The soil removal equipment is a mobile crane with support legs or a grab bucket machine with support legs.

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