A general construction method for vehicle maintenance base project

Abstract

The invention discloses an overall construction method for a vehicle maintenance base project, comprising the following steps: constructing a vehicle base pile foundation; dividing the pile foundation into three pouring sections for pouring, and setting a post-pouring strip between two adjacent pouring sections, so that the three pouring sections after the pouring construction successively form the first, second and third flow sections for construction; cleaning and leveling the ground mud and poor-quality soil as a whole; excavating a cap and a raft slab and constructing the cap and the raft slab in the first and third flow sections; assembling and backfilling materials in the first and third flow sections, backfilling to the cap top elevation, and compacting in layers; the method can improve the material turnover efficiency and facilitate material transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to an overall construction method for a vehicle maintenance base project. Background Art

[0002] In recent years, with urban development, underground space construction has rapidly expanded, with an increasing number of subway lines. Each subway line includes a vehicle maintenance base. The most significant characteristic of vehicle maintenance base projects is their large individual areas, exceeding 400 meters in length and 200 meters in width. Using construction methods similar to those used for building construction can lead to problems such as materials being unable to be transported to the work surface due to the sheer size of the total area, and concrete pump trucks being unable to pump to the work surface due to distance limitations. Currently, the main approach is to use multiple tower cranes to transport materials, pour concrete using ground pump pipelines, and drill holes in steel sections. However, this approach presents significant difficulties in overall construction organization, impacting construction speed and increasing labor, material, and equipment costs. Summary of the Invention

[0003] The purpose of the present invention is to provide an overall construction method for a vehicle maintenance base project, which can improve the material turnover efficiency and facilitate material transportation.

[0004] According to the present invention, a vehicle maintenance base project overall construction method includes the following steps:

[0005] Carry out vehicle base pile foundation construction;

[0006] The pile foundation is divided into three pouring sections for pouring, and a post-pouring strip is set between two adjacent pouring sections. The three pouring sections after pouring construction form the first, second and third flow sections for construction in sequence.

[0007] Clean and level the mud and poor quality soil on the ground;

[0008] Excavate and construct the cap and raft slabs in the first and third flow sections;

[0009] Carry out backfilling of materials in the first and third flow sections, backfill to the top elevation of the cap, and compact in layers;

[0010] Set up wall column operating frames on the supporting platform surfaces in the first and third flow sections;

[0011] The first section of wall columns will be constructed in the first and third flow sections, while the cap and raft slab will be excavated and constructed in the second flow section simultaneously;

[0012] Continue to erect column and wall operation frames in the first and third flow sections, and carry out the second section of wall and column construction. Simultaneously, erect column and wall operation frames, carry out wall and column construction, and backfill material assembly in the second flow section.

[0013] The roof construction is carried out in the first and third flow sections, and the second section of the column and wall operation frame is erected and the wall and column construction is carried out in the second flow section;

[0014] Complete the erection of the remaining column and wall operating frames in the second flow section;

[0015] Carry out segmented top slab pouring in the second flow section;

[0016] Check whether the floor slab strength meets the requirements. If it meets the requirements, remove the wall column operating frame. After the removal is completed, excavate the CFG piles and carry out the construction of pile caps and cushion layers.

[0017] Carry out maintenance pit construction and subsequent backfilling operations.

[0018] During the pouring of pile foundation concrete, it is poured in sections due to design requirements or construction needs, and a post-pouring joint is reserved between the first and last poured concrete. The pile foundation is divided into six major construction flow sections, and the section construction is carried out in sequence, which can greatly improve the overall construction efficiency.

[0019] Furthermore, a temporary road for material transportation is constructed in the second flow section.

[0020] Temporary passages are reserved so that other flow sections can use them to transport materials during construction, thereby improving the efficiency of material transportation and increasing the speed of overall construction.

[0021] Furthermore, the backfill material is formed by backfilling soil with a fine-grained soil content greater than 30%.

[0022] Soil with a fine-grained soil content greater than 30%, namely ordinary soil, is abundant in source and easy to obtain, which can greatly reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a structural plan view of the present invention in which the front and back of the pile foundation are divided into three pouring sections for pouring;

[0025] Figure 2 This is a structural plan view of the present invention after the cap and raft are excavated and constructed in the first and third flow sections;

[0026] Figure 3This is a structural plan view of the present invention after backfilling the materials in the first and third flow sections to the top elevation of the pedestal and compacting them layer by layer;

[0027] Figure 4 The present invention carries out the construction of the first section of wall columns in the first and third flow sections, and simultaneously carries out the excavation of the pedestal and raft slab in the second flow section and the structural plan after the construction;

[0028] Figure 5 This is a structural plan view of the second section of wall column construction in the first and third flow sections of the present invention, and the erection of the column and wall operation frame, wall column construction and material backfilling in the second flow section at the same time;

[0029] Figure 6 This is a structural plan view of the present invention after the top plate construction is carried out in the first and third flow sections, and the second section of the column and wall operation frame is erected and the wall and column are constructed in the second flow section;

[0030] Figure 7 This is a structural plan view of the present invention after the remaining column and wall operating frames are erected in the second flow section.

[0031] In the figure, 1-first flow section; 2-second flow section; 3-third flow section; 4-capping platform; 5-raft slab; 6-column and wall operating frame. DETAILED DESCRIPTION

[0032] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0033] See also Figure 1 , shows a general construction method of a vehicle maintenance base project of the present invention, including the steps of:

[0034] Carry out vehicle base pile foundation construction;

[0035] The pile foundation is divided into three pouring sections for pouring, and a post-pouring strip is set between two adjacent pouring sections. The three pouring sections after pouring construction form the first, second and third flow sections for construction in sequence.

[0036] Clean and level the mud and poor quality soil on the ground;

[0037] Excavate and construct the cap and raft slabs in the first and third flow sections;

[0038] Carry out backfilling of materials in the first and third flow sections, backfill to the top elevation of the cap, and compact in layers;

[0039] Set up wall column operating frames on the supporting platform surfaces in the first and third flow sections;

[0040] The first section of wall columns will be constructed in the first and third flow sections, while the cap and raft slab will be excavated and constructed in the second flow section simultaneously;

[0041] Continue to erect column and wall operation frames in the first and third flow sections, and carry out the second section of wall and column construction. Simultaneously, erect column and wall operation frames, carry out wall and column construction, and backfill material assembly in the second flow section.

[0042] The roof construction is carried out in the first and third flow sections, and the second section of the column and wall operation frame is erected and the wall and column construction is carried out in the second flow section;

[0043] Complete the erection of the remaining column and wall operating frames in the second flow section;

[0044] Carry out segmented top slab pouring in the second flow section;

[0045] Check whether the floor slab strength meets the requirements. If it meets the requirements, remove the wall column operating frame. After the removal is completed, excavate the CFG piles and carry out the construction of pile caps and cushion layers.

[0046] Carry out maintenance pit construction and subsequent backfilling operations.

[0047] During the pouring of pile foundation concrete, it is poured in sections due to design requirements or construction needs. A post-pouring joint is reserved between each pouring section, and the front and back are divided into the first, second, and third flow sections in sequence. The three flow sections are constructed in sections, which can greatly improve the overall construction efficiency. In this embodiment, the total pouring length is 240 meters, and the pouring design length of each section is 40 meters, which is divided into six pouring sections. The post-pouring joint is 80 centimeters. The construction of the first three sections and the last three sections is exactly the same, so the whole can be divided into two steps. The first three sections and the last three sections can be constructed successively according to the above-mentioned construction method. Therefore, the above-mentioned construction method is not only limited to dividing the flow sections into three sections for construction, but is also applicable to any other scenario in which the above-mentioned segmented construction can be adopted.

[0048] A temporary road for material transportation is constructed in the second flow section. The road in the second flow section is used as a temporary passage. Other flow sections can use it to transport materials during construction, thereby improving the efficiency of material transportation and the speed of overall construction. As a preferred embodiment of the present invention, the temporary road adopts a 20 cm thick graded gravel cushion layer, that is, a 20 cm thick graded gravel cushion layer.

[0049] The backfill material is backfilled with soil having a fine-grained soil content greater than 30%. The fine-grained soil having a content greater than 30% is ordinary soil, which is abundant and easy to obtain, and can greatly reduce construction costs.

[0050] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0051] In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0053] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A general construction method for a vehicle maintenance base project, characterized in that: Including steps: Carry out vehicle base pile foundation construction; The pouring is divided into three sections before and after the pile foundation. At the same time, a post-pouring strip is set between two adjacent pouring sections. After the pouring construction, the three pouring sections form the first flow section, the second flow section and the third flow section in sequence. Clean and level the mud and poor quality soil on the ground; Excavate the cap and raft slabs and construct the cap and raft slabs in the first and third flow sections; Carry out backfilling of materials in the first and third flow sections, backfill to the top elevation of the cap, and compact in layers; Set up wall column operating frames on the supporting platform surface in the first and third flow sections; The first section of wall columns will be constructed in the first and third flow sections, while the cap and raft slab will be excavated and constructed in the second flow section simultaneously. Continue to erect column and wall operation frames in the first and third flow sections, and carry out the second section of wall and column construction. Simultaneously, erect column and wall operation frames, carry out wall and column construction, and backfill materials in the second flow section. The roof construction is carried out in the first and third flow sections, and the second section of the column and wall operation frame is erected and the wall and column construction is carried out in the second flow section; Complete the erection of the remaining column and wall operating frames in the second flow section; Carry out segmented top slab pouring in the second flow section; Check whether the floor slab strength meets the requirements. If it meets the requirements, remove the wall column operating frame. After the removal is completed, excavate the CFG piles and carry out the construction of pile caps and cushion layers. Carry out maintenance pit construction and subsequent backfilling operations.

2. The overall construction method of the vehicle maintenance base project according to claim 1 is characterized in that: A temporary road for material transportation will be constructed in the second flow section.

3. The overall construction method of the vehicle maintenance base project according to claim 1 is characterized in that: The backfill material is formed by using a soil body with a fine-grained soil content greater than 30%.

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