CN207686147U - Floor and double steel bar protective layer thickness control device - Google Patents

Abstract

The utility model discloses a floor slab and a double-layer steel bar protective layer thickness control device, which comprises a core pillar and two fixed steel bars that are fixed up and down side by side on the core pillar and are respectively used to support the slab gluten bar and the slab bottom bar; The middle part of the steel bar is connected with the core pillar axially and vertically, and the two ends extend horizontally outward and are bent upward at the end to form a hook. The utility model can prevent deformation and displacement of steel bars caused by stepping on the surface bars of the slab, and the device is not easy to overturn, can simultaneously control the thickness of the floor slab and the thickness of the double-layer steel bar protective layer, facilitates construction, and improves construction quality.

Description

Floor and double-layer reinforced protective layer thickness control device

technical field

The utility model belongs to the technical field of construction tools, in particular to a thickness control device for floor slabs and double-layer reinforcement protective layers.

Background technique

In construction engineering, the general method for controlling the thickness of the reinforcement cover at the bottom and surface of the slab is: use concrete pads to control the thickness of the reinforcement cover at the bottom of the slab, and the thickness of the reinforcement cover at the slab surface is controlled by the shaped steel support, so it cannot be simultaneously For rebar cover thickness control.

In addition, for the control part of the protective layer of steel bars at the bottom of the slab, it is easy to shift or fall off during its construction, resulting in the thickness of the protective layer of steel bars at the bottom of the slab not meeting the requirements. When the steel bar is stepped on or the local load is too large during construction, the steel bar support is easy to be bent, collapsed or displaced, which affects the construction quality of the slab.

In addition, for the control of floor slab thickness, elevation control is usually adopted, and the corresponding elevation is marked on the adjacent column reinforcement, and the floor slab thickness is controlled by pulling wires and leading measurements. This control measure is inconvenient to operate and affects the construction progress of slab pouring.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems in the prior art, to provide a floor and double-layer reinforcement protective layer thickness control device with simple structure and convenient construction, which can simultaneously control the thickness of the floor slab and the thickness of the reinforcement protective layer, and solve the problem of the construction process. Engineering quality problems caused by various disturbances in the steel bar deformation.

For realizing above-mentioned utility model purpose, the utility model has adopted following technical scheme:

The thickness control device for the floor slab and double-layer reinforced protective layer includes a core pillar and two fixed reinforcements fixed side by side on the core pillar to support the slab gluten and the slab bottom reinforcement respectively; the middle part of each fixed reinforcement is connected to the core pillar The axial direction is vertically connected, and the two ends extend horizontally outward and are bent upward at the end to form a hook.

The shape of the above-mentioned core pillar is a circular platform or a trapezoidal platform, and the height is the same as the thickness of the floor.

The diameter of the top surface of the circular table is 30mm-50mm, and the diameter of the bottom surface of the circular table is 60mm-80mm.

The top surface of the trapezoidal platform is a square with a side length of 30 mm to 50 mm, and the bottom surface of the trapezoidal platform is a square with a side length of 60 mm to 80 mm.

The aforementioned core pillars are made of concrete.

The length of the two ends of the above-mentioned fixed steel bars extending horizontally outwards is greater than twice the diameter of the slab bar or slab bottom bar it supports; the inner diameter of the hook is the same as the diameter of the slab bar or slab bottom bar it supports.

The above-mentioned fixed steel bars are divided into upper fixed steel bars located at the upper part of the core pillar and lower fixed steel bars located at the lower part of the core pillar; The distance between the connection point of the fixed reinforcement and the core pillar and the bottom surface of the core pillar is adapted to the thickness of the protective layer at the bottom of the slab.

Compared with the prior art, the utility model has the advantages of:

The floor slab and the double-layer steel bar protective layer thickness control device disclosed by the utility model are used to support the gluten bar and the bottom bar of the slab respectively by connecting two fixed steel bars side by side on the core pillar, and the middle part of each fixed steel bar is It is vertically connected with the core pillar, and the two ends extend horizontally outwards and are bent upwards to form hooks. Each fixed steel bar can buckle two steel bars at the same time, which can not only improve the stability of the protective layer of steel bars, but also improve work efficiency ; In addition, the cross-section of the upper end of the core pillar is smaller than the cross-section of the lower end, so that it stands more firmly on the formwork. The utility model can prevent deformation and displacement of steel bars caused by stepping on the surface bars of the slab, and the device is not easy to overturn, can simultaneously control the thickness of the floor slab and the thickness of the double-layer steel bar protective layer, facilitates construction, and improves construction quality.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a schematic structural view of Embodiment 2 of the utility model.

Fig. 3 is a schematic diagram of the use state of Embodiment 1 of the present utility model.

Reference signs: 1—core pillar, 2—upper fixed reinforcement, 3—lower fixed reinforcement, 4—slab gluten, 41—lower layer gluten, 42—upper layer gluten, 5—slab bottom reinforcement, 51—lower layer bottom reinforcement , 52—the bottom rib of the upper deck.

Detailed ways

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.

Example 1

As shown in Figure 1, the floor slab and the double-layer reinforced protective layer thickness control device include a core pillar 1 and two upper and lower fixed reinforcements anchored side by side on the core pillar for respectively supporting the plate gluten and the bottom reinforcement of the plate; the shape of the core pillar It is a circular platform with the same height as the floor slab. The diameter of the top surface of the circular platform is 30mm, and the diameter of the bottom surface of the circular platform is 60mm. The cross-section of the upper end of the core pillar is smaller than the cross-section of the lower end, so that it stands more firmly on the formwork; the core pillar is made of It is made of concrete with the same strength as floor concrete or one grade higher. The concrete has high compressive strength, which makes the core pillar durable and not easy to be damaged.

The middle part of each fixed steel bar is connected with the core pillar 1 axially and vertically, and the two ends extend horizontally outward and are bent upward at the end to form a hook; the horizontally outward extended length of both ends of the fixed steel bar is larger than the plate it supports Twice the diameter of the gluten or slab bottom bar; the inner diameter of the hook is the same as the diameter of the slab gluten or slab bottom bar it supports, and each fixed steel bar can buckle two steel bars at the same time, which can not only improve the stability of the steel bar cover, but also Can improve work efficiency.

The fixed reinforcement is divided into the upper fixed reinforcement 2 located at the upper part of the core pillar and the lower fixed reinforcement 3 located at the lower part of the core pillar; the distance between the connection point of the upper fixed reinforcement 2 and the core pillar 1 and the top surface of the core pillar 1 is adapted to the protective layer of the slab The thickness; the distance between the connection point between the lower fixed steel bar 3 and the core pillar 1 and the bottom surface of the core pillar is adapted to the thickness of the protective layer at the bottom of the slab. The anchoring position of the upper fixed steel bar and the lower fixed steel bar from the core pillar is adjusted according to the thickness of the slab surface protective layer and the bottom protective layer of the slab, so that the distance between the upper edge of the upper fixed steel bar and the top surface of the core pillar and the lower edge of the lower fixed steel bar The distance from the bottom surface of the core pillar meets the requirements for the thickness of the protective layer of the steel bar, and the thickness of the floor slab, the protective layer on the surface of the slab and the protective layer at the bottom of the slab can be precisely controlled at the same time.

Example 2

As shown in Figure 2, the floor slab and the double-layer reinforced protective layer thickness control device include a core pillar 1 and two upper and lower fixed reinforcements that are anchored side by side on the core pillar and are respectively used to support the plate gluten and the bottom reinforcement of the slab; the shape of the core pillar It is a trapezoidal platform, and the height is the same as the thickness of the floor. The top surface of the trapezoidal platform is a square with a side length of 50mm, and the bottom surface of the trapezoidal platform is a square with a side length of 80mm. On the formwork; the core pillars are made of concrete of the same grade or one grade higher than the concrete strength of the floor slab.

The middle part of each fixed steel bar is connected with the core pillar 1 axially and vertically, and the two ends extend horizontally outward and are bent upward at the end to form a hook; the horizontally outward extended length of both ends of the fixed steel bar is larger than the plate it supports Twice the diameter of the gluten or slab bottom bar; the inner diameter of the hook is the same as the diameter of the slab gluten or slab bottom bar it supports, and each fixed steel bar can buckle two steel bars at the same time, which can not only improve the stability of the steel bar cover, but also Can improve work efficiency.

The fixed reinforcement is divided into the upper fixed reinforcement 2 located at the upper part of the core pillar and the lower fixed reinforcement 3 located at the lower part of the core pillar; the distance between the connection point of the upper fixed reinforcement 2 and the core pillar 1 and the top surface of the core pillar 1 is adapted to the protective layer of the slab The thickness; the distance between the connection point between the lower fixed steel bar 3 and the core pillar 1 and the bottom surface of the core pillar is adapted to the thickness of the protective layer at the bottom of the slab.

The installation method of the floor slab and the double-layer steel bar protective layer thickness control device of the utility model embodiment 1:

As shown in Figure 3, first place the floor slab and the thickness control device of the double-layer reinforcement protective layer on the formwork, the slab bottom reinforcement 5 includes the lower floor slab bottom reinforcement 51 and the upper floor slab bottom reinforcement 52, and the lower floor slab bottom reinforcement 51 is buckled and fixed In the hooks at both ends of the steel bar 3, fix the bottom rib 51 of the lower floor with the thickness control device of the floor and the double-layer steel bar protection layer, and build the bottom rib 52 of the upper floor above the bottom rib 51 of the lower floor, and the board can be completed. The construction of the bottom rib 5; the plate gluten 4 includes the lower plate gluten 41 and the upper plate gluten 42. Use a similar method to build the lower plate gluten 41 and the upper plate gluten 42 on the upper fixed steel bar 2 and fix them, and then the plate gluten 4 can be completed. Concrete is poured, the concrete is just below the top of the core pillar 1 when pouring, the thickness of the floor and the floor near the double-layer steel bar protective layer thickness control device is controlled by the top surface of the concrete pouring control device, each floor and double-layer steel bar protection The thickness of the floor between the layer thickness control devices is controlled by the leveling line surface of the pull wire; after pouring and curing are completed, the formwork can be removed to obtain a floor slab with a controlled thickness and a double-layer steel protection layer. The thickness of the floor slab is the height of the core pillar 1, the thickness of the protective layer of steel reinforcement on the surface is the distance from the upper edge of the gluten 42 of the upper layer to the top surface of the core pillar 1, and the thickness of the protective layer of steel reinforcement at the bottom of the slab is the distance from the lower edge of the bottom reinforcement 51 of the lower floor to the core pillar 1 distance from the base.

The above-mentioned embodiments are only some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Claims (6)

1. The device for controlling the thickness of the floor slab and the double-layer reinforced protective layer is characterized in that: it includes a core pillar and two fixed reinforcements that are fixed up and down side by side on the core pillar and are respectively used to support the gluten bars of the slab and the bottom reinforcement of the slab; each fixed reinforcement The middle part of the steel bar is connected vertically to the axis of the core pillar, and the two ends extend horizontally outward and are bent upward at the end to form a hook; Twice the diameter of the bottom bar; the inner diameter of the hook is the same as the diameter of the slab or slab bottom bar it supports. 2. The device for controlling the thickness of the floor and the double-layer reinforced protective layer according to claim 1, wherein the shape of the core pillar is a circular platform or a trapezoidal platform, and the height is the same as the thickness of the floor. 3. The device for controlling the thickness of floor slabs and double-layer steel bar protection layers according to claim 2, characterized in that: the diameter of the top surface of the circular table is 30mm-50mm, and the diameter of the bottom surface of the circular table is 60mm-80mm. 4. The device for controlling the thickness of floor slabs and double-layer reinforced protective layers according to claim 2, wherein the top surface of the trapezoidal platform is a square with a side length of 30 mm to 50 mm, and the bottom surface of the trapezoidal platform is a square with a side length of 60 mm to 80 mm. . 5. The device for controlling the thickness of the floor slab and double-layer reinforced protective layer according to claim 1 or 2, wherein the core pillar is made of concrete. 6. The device for controlling the thickness of the floor slab and the double-layer reinforcement protective layer according to claim 1, wherein the fixed reinforcement is divided into an upper fixed reinforcement positioned at the top of the core pillar and a lower fixed reinforcement positioned at the bottom of the core pillar; The distance between the connection point of the steel bar and the core pillar and the top surface of the core pillar is adapted to the thickness of the protective layer on the slab surface; the distance between the connection point of the lower fixed steel bar and the core pillar and the bottom surface of the core pillar is adapted to the thickness of the protective layer at the bottom of the slab.