Concrete construction method for shear wall of ultrahigh closed structure

Abstract

The invention discloses a concrete construction method for a shear wall of an ultrahigh closed structure. The concrete construction method comprises the steps that a, a mortar cushion layer is poured on the inner side of a formwork of the ultrahigh shear wall; b, a plurality of guide pipes are arranged in the formwork, and the guide pipes are arranged in the length direction of the ultrahigh shear wall at intervals; c, a layer of concrete is poured through each guide pipe in sequence in the length direction of the ultrahigh shear wall; d, after a layer of concrete is poured into each guide pipe, vibrating and compacting are conducted; and e, before the first layer of concrete is poured and initially set, the guide pipe is lifted up, and the steps c-d are repeated to pour the concrete layer by layer from bottom to top till the top of the formwork is reached. The method solves the problem that segregation and formwork explosion are prone to occurring when the shear wall is constructed through a traditional pouring method.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a shear wall concrete construction method of an ultra-high closed structure. Background Art

[0002] In construction projects, the concrete pouring construction of super-high shear walls has always been a technical problem. For shear walls with a height of more than 6 meters, traditional pouring methods often have many problems, such as the concrete pressure easily leading to leakage or even explosion of the shear wall formwork, and the concrete is easily blocked by steel bars during the falling process, causing segregation, which affects the quality of concrete construction and structural safety. At the same time, factors such as site restrictions, construction efficiency, and cost control during the construction process also put forward higher requirements for construction methods. Summary of the invention

[0003] In order to overcome the defects of the prior art, a super-high closed structure shear wall concrete construction method is provided to solve the problems of segregation and mold explosion that are prone to occur when using traditional casting methods to construct shear walls.

[0004] To achieve the above object, a shear wall concrete construction method of an ultra-high closed structure is provided, comprising the following steps:

[0005] a. Pour the mortar cushion layer on the inner side of the formwork of the super-high shear wall;

[0006] b. Arrange a plurality of conduits in the template, and the plurality of conduits are arranged at intervals along the length direction of the super-high shear wall;

[0007] c. pouring a layer of concrete through each conduit in sequence along the length direction of the super-high shear wall;

[0008] d. After pouring a layer of concrete into each conduit, vibrate and compact it;

[0009] e. Before the first layer of concrete is initially set, lift up the conduit and repeat steps c to d to pour concrete layer by layer from bottom to top until the top of the formwork.

[0010] Furthermore, the thickness of the mortar cushion layer is 2 to 3 cm.

[0011] Furthermore, the thickness of the layer of concrete is 2 to 3 meters.

[0012] Furthermore, the interval between two adjacent conduits is 2 to 3 m.

[0013] Furthermore, the drop distance between the lower end of the conduit and the concrete pouring surface is less than 1.5m.

[0014] The beneficial effect of the present invention is that the shear wall concrete construction method of the super-high closed structure of the present invention effectively reduces the concrete segregation and formwork explosion phenomenon through the conduit drainage pouring and layered pouring process, improves the compactness and integrity of the concrete, and ensures the quality of concrete construction. The concrete has a good appearance after demolding, reduces quality defects such as wall bottom rot, and improves the durability and service life of the project.

[0015] The shear wall concrete construction method of the super-high closed structure of the present invention has reasonable conduit arrangement and construction operation process, which reduces the risk of template leakage or even template explosion caused by concrete pressure and improves the safety of the construction process.

[0016] The super-high closed structure shear wall concrete construction method of the present invention adopts a super-high closed structure shear wall one-time pouring construction method, and pours continuously in the middle, which reduces the construction process and construction time and improves the construction efficiency. Compared with the traditional construction method, it saves a lot of manpower and material resources and saves construction time for the overall construction progress of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 It is a top view of the shear wall formwork of the super-high closed structure according to an embodiment of the present invention.

[0019] Figure 2 This is a plan view of the arrangement of the catheter according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Reference Figure 1 and Figure 2 As shown, the present invention provides a shear wall concrete construction method of an ultra-high closed structure, comprising the following steps:

[0023] a. Pour mortar cushion layer on the inner side of the formwork of super high shear wall.

[0024] As a preferred implementation, the thickness of the mortar cushion layer is 2 to 3 cm.

[0025] Before pouring the concrete of the shear wall, pour a 2 to 3 cm thick mortar layer at the foot of the super-high shear wall to reduce the occurrence of root rot at the bottom of the wall after demolding and improve the appearance of the concrete after demolding.

[0026] b. Multiple ducts are set in the formwork, and the multiple ducts are set at intervals along the length direction of the super-high shear wall.

[0027] As a preferred implementation, the interval between two adjacent conduits is 2 to 3 meters.

[0028] The conduit needs to be lifted by a tower crane in advance and inserted into the inner side of the template 1 of the super-high shear wall. When inserting the conduit, the vertical reinforcement of the wall needs to be broken apart before placement. When inserting, the verticality of the conduit needs to be ensured to avoid touching the lower reinforcement.

[0029] In this embodiment, the height of the super-high shear wall is 8.5-9.25 m, and the thickness of the wall is 500 m. A conduit is inserted at intervals of 2-3 m, and a total of 4 conduits are inserted.

[0030] As a preferred implementation, the drop distance between the lower end of the conduit and the concrete pouring surface is less than 1.5m.

[0031] After each conduit is poured, it is lifted to the upper pouring surface with a tower crane. After the second layer of concrete is poured, the broken steel bars need to be restored, and the distance from the bottom of the conduit to the pouring surface needs to be controlled to be less than 1.5m.

[0032] c. Pour a layer of concrete through each duct in sequence along the length direction of the super-high shear wall.

[0033] As a preferred implementation, the thickness of a layer of concrete is 2 to 3 meters.

[0034] When pouring the first layer of concrete, pour it sequentially along the length direction of the super-high shear wall, and the poured concrete height is 2 to 3m.

[0035] d. Pour a layer of concrete into each conduit and vibrate it to make it dense.

[0036] The vibrating rod needs to be inserted to the bottom of the shear wall, and the steel bars need to be avoided during vibration. The vibrating rod can be pulled out only after vibration is in place. A special person is arranged at the bottom formwork with a walkie-talkie to watch the formwork, communicate quickly if any situation occurs, and suspend pouring.

[0037] e. Before a layer of concrete begins to set, lift the guide tube and repeat steps c to d to pour concrete layer by layer from bottom to top until the top of the formwork.

[0038] Due to site limitations, a ground pump is used for pouring. The length of the pump pipe exceeds 150m, and concrete is poured from top to bottom. Therefore, an elbow is required at 6m intervals on the pump pipe to reduce the occurrence of concrete blockage. The slump of concrete should be controlled at 180±20, and the power of the pump truck is adjusted to 25 cubic meters / h. When pouring materials, a dedicated person is required to monitor the materials at the pump truck. If there are any problems, communicate in time and stop pouring.

[0039] The shear wall concrete construction method of the super-high closed structure of the present invention effectively reduces the concrete segregation and formwork explosion through the conduit drainage pouring and layered pouring process, improves the compactness and integrity of the concrete, and ensures the quality of concrete construction. The concrete has a good appearance after demolding, reduces quality defects such as wall bottom rot, and improves the durability and service life of the project.

[0040] The shear wall concrete construction method of the super-high closed structure of the present invention has reasonable conduit arrangement and construction operation process, which reduces the risk of template leakage or even template explosion caused by concrete pressure and improves the safety of the construction process.

[0041] The super-high closed structure shear wall concrete construction method of the present invention adopts a super-high closed structure shear wall one-time pouring construction method, and pours continuously in the middle, which reduces the construction process and construction time and improves the construction efficiency. Compared with the traditional construction method, it saves a lot of manpower and material resources and saves construction time for the overall construction progress of the project.

[0042] The shear wall concrete construction method of the super-high closed structure of the present invention adopts the casting method of ground pump plus placing machine to solve the problem that the sky pump cannot be used for casting due to site restrictions. It also ensures the smooth progress of construction and adapts to complex construction conditions by reasonably setting the pump pipe elbow, controlling the slump of concrete and the power of the pump truck.

[0043] The shear wall concrete construction method of the super-high closed structure of the present invention is easy to operate and has significant effects. It has high promotion value as a demonstration case of super-high shear wall concrete pouring. The construction process is green and environmentally friendly, which can effectively save engineering construction costs and construction period, and improve the quality and efficiency of the project.

[0044] The super-high closed structure shear wall concrete construction method of the present invention realizes one-time pouring of the super-high closed structure shear wall, reduces construction procedures, improves construction efficiency, saves manpower and material resources, and shortens construction period.

[0045] The shear wall concrete construction method of the super-high closed structure of the present invention adapts to complex construction conditions such as site restrictions, adopts a reasonable casting method and equipment configuration, and ensures smooth construction.

[0046] The shear wall concrete construction method of the super-high closed structure of the present invention improves the durability and service life of the project and reduces the generation of temperature cracks by optimizing the concrete mix ratio and other measures.

[0047] The super-high closed structure shear wall concrete construction method of the present invention solves the problems of template leakage, template explosion, concrete segregation, etc. during the super-high shear wall concrete pouring process, and improves the construction quality and safety.

[0048] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A shear wall concrete construction method for an ultra-high closed structure, characterized in that: The following steps are involved: a. Pour the mortar cushion layer on the inner side of the formwork of the super-high shear wall; b. Arrange a plurality of conduits in the template, and the plurality of conduits are arranged at intervals along the length direction of the super-high shear wall; c. pouring a layer of concrete through each conduit in sequence along the length direction of the super-high shear wall; d. After pouring a layer of concrete into each conduit, vibrate and compact it; e. Before the first layer of concrete is initially set, lift up the conduit and repeat steps c to d to pour concrete layer by layer from bottom to top until the top of the formwork.

2. The shear wall concrete construction method of the super-high closed structure according to claim 1 is characterized in that: The thickness of the mortar cushion layer is 2 to 3 cm.

3. The shear wall concrete construction method of the super-high closed structure according to claim 1 is characterized in that: The thickness of the layer of concrete is 2 to 3 meters.

4. The shear wall concrete construction method of the super-high closed structure according to claim 1 is characterized in that: The interval between two adjacent conduits is 2 to 3 meters.

5. The shear wall concrete construction method of the super-high closed structure according to claim 1 is characterized in that: The drop distance between the lower end of the conduit and the concrete pouring surface is less than 1.5m.

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