Construction method based on existing basement construction support

Abstract

The invention discloses a construction method based on an existing basement construction support, which comprises the following steps: step 1, removing an original basement for the first time, and excavating first skin soil outside the original basement: excavating the first skin soil outside the range of the original basement to a first support bottom elevation, removing a top plate, a beam and an inner column of an original basement structure, and removing an outer wall to the first support bottom elevation; secondly, an original basement bottom plate is broken and removed, a first support outside the original basement range is constructed, specifically, a bottom plate in the original basement range is broken and removed, convenience is provided for continuously excavating second skin soil after a follow-up first support trestle is constructed, and the first support outside the original basement range is constructed; step 3, first support construction in the original basement range: laying a steel plate on the crushed original basement, erecting a short-limb bent frame on the steel plate, and performing first support trestle construction; and fourthly, remaining structures are broken and removed, and follow-up excavation is conducted, specifically, after construction of the first supporting trestle is completed, follow-up foundation pit construction is conducted.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a construction method based on existing basement construction supports. Background Technology

[0002] With the rapid development of cities, many old buildings from the last century remain, most of which only have single-story basements, resulting in insufficient utilization of underground space. Therefore, such projects often involve demolishing the original basement and constructing a new basement with more floors. However, the demolition of the original basement and the construction of the new basement inevitably lead to mutual interference between the original basement and the supporting structure construction. To address this issue, a technical solution that combines the construction of the original basement and the supporting structure construction is proposed. Summary of the Invention

[0003] This invention addresses the problems and shortcomings of existing technologies by providing a construction method based on existing basement construction supports.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This invention provides a construction method based on existing basement construction supports, characterized by comprising the following steps:

[0006] Step 1: Initial demolition of the original basement and excavation of the first layer of soil outside the original basement: excavate the first layer of soil outside the original basement area to the first support bottom elevation, demolish the original basement structure including the top slab, beams, and internal columns, and demolish the external walls to the first support bottom elevation;

[0007] Step 2: Demolition of the original basement floor slab and construction of the first layer of support outside the original basement area: Demolition of the original basement floor slab will facilitate the excavation of the second layer of soil after the completion of the first layer of support trestle. Construction of the first layer of support outside the original basement area.

[0008] Step 3: Construction of the first support within the original basement area: Steel plates are placed on the broken original basement, and short-limb scaffolding is erected on the steel plates to carry out the construction of the first support trestle.

[0009] Step 4: Demolition of the remaining structure and subsequent excavation: After the first supporting trestle bridge is completed, the subsequent foundation pit construction will proceed.

[0010] The positive and progressive effects of this invention are as follows:

[0011] This invention proposes a technique that combines the original basement with the support construction. Without affecting the construction quality, the demolition of the original basement is integrated into the support construction process, saving costs and time. Attached Figure Description

[0012] Figure 1This is a flowchart illustrating a preferred embodiment of the construction method based on existing basement construction supports.

[0013] Figure 2 This is a schematic diagram of the construction structure of a preferred embodiment of the present invention. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] like Figure 1-2 As shown, this embodiment of the invention provides a construction method based on existing basement construction supports, which includes the following steps:

[0016] Step 1: Initial demolition of the original basement and excavation of the first layer of soil outside the original basement: excavate the first layer of soil outside the original basement area to the first support bottom elevation, demolish the original basement structure including the top slab, beams, and internal columns, and demolish the external walls to the first support bottom elevation.

[0017] Step 2: Demolition of the original basement floor slab and construction of the first support outside the original basement area: Since the distance between the bottom of the trestle and the original basement floor slab is too narrow after the first support trestle is completed, the floor slab within the original basement area will be demolished in advance to facilitate the excavation of the second layer of soil after the first support trestle is completed. Construction of the first support outside the original basement area.

[0018] Step 3: Construction of the first support within the original basement area: Place steel plates on the broken original basement, and erect short-limb scaffolding on the steel plates to carry out the construction of the first support trestle.

[0019] Step 4: Demolition of the remaining structure and subsequent excavation: After the first supporting trestle bridge is completed, the subsequent foundation pit construction will proceed.

[0020] Taking a renovation project as an example, this invention proposes a construction method that combines the original basement with the support construction. Without affecting the construction quality, the demolition of the original basement is integrated into the support construction process, saving costs and time.

[0021] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A construction method based on existing basement construction supports, characterized in that, It includes the following steps: Step 1: Initial demolition of the original basement and excavation of the first layer of soil outside the original basement: excavate the first layer of soil outside the original basement area to the first support bottom elevation, demolish the original basement structure including the top slab, beams, and internal columns, and demolish the external walls to the first support bottom elevation; Step 2: Demolition of the original basement floor slab and construction of the first layer of support outside the original basement area: Demolition of the original basement floor slab will facilitate the excavation of the second layer of soil after the completion of the first layer of support trestle. Construction of the first layer of support outside the original basement area. Step 3: Construction of the first support within the original basement area: Steel plates are placed on the broken original basement, and short-limb scaffolding is erected on the steel plates to carry out the construction of the first support trestle. Step 4: Demolition of the remaining structure and subsequent excavation: After the first supporting trestle bridge is completed, the subsequent foundation pit construction will proceed.

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