CN111441499A - Joint structure and method for common concrete and iron ore sand concrete super-thick wall - Google Patents

Abstract

The invention relates to the technical field of joint wall body pouring, and particularly discloses a joint structure and a joint method of a common concrete and iron ore sand concrete super-thick wall body. The invention solves the problem of difficult construction at the joint of common concrete and iron ore concrete, avoids vertical construction joints generated by pouring in different times, increases the integrity and stability of the structure and improves the radiation-proof performance of the structure.

Description

A kind of ordinary concrete and iron ore concrete super thick wall interface structure and method

technical field

The invention relates to the technical field of building concrete wall pouring, in particular to an ordinary concrete and iron ore concrete super-thick wall handover structure and method.

Background technique

At present, the thickness of the poured walls of the proton maintenance building in the hospital is very large, and it is divided into ordinary concrete walls and iron ore concrete walls. There are ordinary concrete walls and iron ore concrete walls in the proton maintenance building. , The thickness of the iron ore concrete wall is 2550mm.

For ordinary concrete walls and iron ore concrete walls, due to their different materials, ordinary concrete is made of ordinary sand and gravel, and the dry density of concrete is about 2.3 tons per cubic meter; while iron ore concrete is made of iron ore and iron ore. It is made of stone, with a dry density of 3.9 tons per cubic meter, which is about 1.7 times that of ordinary concrete.

Since the structural function is used for proton radiotherapy, a large amount of radioactive particles will be generated, and the concrete must meet the requirements of radiation protection and cannot produce cracks, so it is difficult to construct the junction between the two.

The super-thick wall junction existing in the prior art adopts the following methods:

1. Two walls are separately poured. This method has future problems: because the wall thickness is more than 2.5m, and the diameter of the wall steel bars is large and densely distributed, if the two are poured separately, there will be uneven shrinkage of different concretes. Cracks occur, affecting the radiation protection effect of the structure.

2. Directly pouring ordinary concrete and iron ore concrete super-thick walls at the same time has the following problems: if they are poured at the same time, due to the high density of iron ore concrete, it will flow into ordinary concrete, resulting in the mixing of the two kinds of concrete, which cannot be Ensure the functionality of the structure.

Therefore, it is necessary to propose a new super-thick wall interface structure of ordinary concrete and iron ore sand concrete to solve the technical problem of poor radiation protection due to poor structural integrity.

SUMMARY OF THE INVENTION

Aiming at the deficiencies in the prior art, one of the objects of the present invention is to provide a common concrete and iron ore concrete super-thick wall joint structure, which solves the problem of difficult construction at the joint of common concrete and iron ore concrete, and avoids the The vertical construction joints produced by staged pouring increase the integrity and stability of the structure, improve the radiation protection performance of the structure, and the construction method at the junction is simple and easy to implement.

The above-mentioned purpose of the present invention is achieved through the following technical solutions:

An ordinary concrete and iron ore sand concrete super-thick wall interface structure, including ordinary concrete wall and iron ore sand concrete wall, the junction of the ordinary concrete wall and iron ore sand concrete wall is provided with several anti-iron during pouring. The ore sand concrete flows to the blocking structure of the ordinary concrete, and the blocking structure is covered with the interface of the ordinary concrete wall and the iron ore sand concrete wall.

By adopting the above technical solution, the above-mentioned blocking structure is arranged at the junction of the pre-cast ordinary concrete wall and the iron ore concrete wall, which can prevent the heavier iron ore concrete from flowing into the lighter ordinary concrete, and the two can be poured at the same time. , to avoid the vertical construction joints produced by staged pouring, increase the integrity and stability of the structure, and improve the radiation protection performance of the structure.

In a preferred example of the present invention, it can be further configured that: the flow blocking structure includes a flow blocking plate, a plurality of reinforcing bars for fixing the flow blocking plate, and the reinforcing bars are fixed on the steel cage net of the precast wall.

By adopting the above technical solution, the baffle plate can prevent the heavier iron ore concrete from flowing to the ordinary concrete, and the steel bars are used to reinforce the baffle plate to prevent the lateral pressure caused when the heavier iron ore concrete is poured quickly. Impact from the spoiler, which damages or displaces the spoiler.

In a preferred example of the present invention, it can be further configured that: the baffle plate includes a baffle portion and a fixing portion disposed on both sides of the baffle portion.

By adopting the above technical solution, the blocking part mainly plays the function of preventing the heavier iron ore concrete from flowing to the ordinary concrete, and the fixing part is used for connection with the steel bar, which ensures the connection firmness of the blocking plate.

In a preferred example of the present invention, it can be further configured that: the flow blocking portion is provided with a plurality of quick and easy closing openings.

By adopting the above technical solution, the quick and easy closing can make the steel bars under 12mm pass through with a little force, which is convenient for piercing the steel bars and continuously bundling the steel bars.

In a preferred example of the present invention, it can be further configured that: the fixing portion includes a curved portion that can be wound around the steel bar and a lap portion that connects adjacent spoilers.

By adopting the above technical solution, the winding portion is used to fix a single spoiler on the steel bar, and the overlapping portion is used for the connection between adjacent spoilers to ensure the seamless connection between adjacent spoilers and prevent the The heavier iron ore concrete flows through the gaps to the normal concrete.

In a preferred example of the present invention, it can be further configured that: the blocking part is provided with at least one positioning groove, and the steel bar is clamped in the positioning groove.

By adopting the above technical solution, the positioning groove is used to fix and locate the spoiler to prevent the spoiler from shifting due to a slight speed deviation when ordinary concrete and heavier iron ore concrete are poured at the same time. .

In a preferred example of the present invention, it can be further configured that: the thickness of the spoiler is 1-2mm.

By adopting the above technical solution, the spoiler is light in weight, can be directly fixed on the steel bars, is fast in installation, convenient in transportation, and easy in processing.

In a preferred example of the present invention, it can be further configured that: the quick and easy closing mouth is a square hole of 5mm*5mm.

By adopting the above technical solution, the insertion of the reinforcing bars at the junction is facilitated, which makes the installation of the entire flow blocking structure more convenient and saves time and effort.

In a preferred example of the present invention, it can be further configured that: the cross section of the baffle plate is arcuate, and its inner concave surface faces the iron ore sand concrete wall.

By adopting the above technical solution, when pouring heavier iron ore concrete, the bow-shaped spoiler can firstly buffer the concrete to prevent the concrete from directly impacting the spoiler.

Another object of the present invention is to provide a kind of ordinary concrete and iron ore concrete super thick wall junction construction method, comprising the following steps:

S1. Before pouring the ordinary concrete wall and the iron ore concrete wall, set up a blocking structure at the junction of the two. The specific setting method is: laying the above blocking plate, and the inner concave surface of the blocking board faces the iron ore sand concrete wall. , the winding part of the spoiler is wound on the steel bar, and then the positioning groove is also clamped to the steel bar, the steel bar is fixed on the steel cage net by bundling, and the two adjacent spoilers are overlapped by their respective lap joints. The transverse reinforcement of the reinforcement cage passes through the quick and easy closing opening;

S2. After the above structure is fixed, the method of pouring the ordinary concrete wall and the iron ore concrete wall at the same time is used for pouring, and it is integrally formed.

To sum up, the present invention includes at least one of the following beneficial technical effects:

It solves the problem of difficult construction at the junction of ordinary concrete and iron ore concrete, avoids vertical construction joints caused by staged pouring, increases the integrity and stability of the structure, and improves the radiation protection performance of the structure;

The structure is simple, the construction is convenient and easy, and the pouring of the ordinary concrete wall and the iron ore concrete wall can be carried out at the same time, and it can be formed at one time.

Description of drawings

FIG. 1 is a schematic top view of the overall wall structure of the present invention.

FIG. 2 is an enlarged structural schematic diagram of the junction of the ordinary concrete wall and the iron ore sand concrete wall of the present invention.

FIG. 3 is a schematic diagram of the flow blocking structure of the present invention.

FIG. 4 is a schematic view of the cross-sectional structure of the spoiler of the present invention

Figure 5 is a plan view of the spoiler of the present invention.

Among them, the marks in the figure are as follows:

1. Ordinary concrete wall, 2. Iron ore concrete wall, 3. Blocking structure;

31, spoiler, 32, steel bars;

311, blocking part, 3111, quick and easy closing, 3112, positioning groove, 312, fixing part, 3121, winding part, 3122, lap joint.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings.

1 and 2, the present embodiment discloses a common concrete and iron ore concrete ultra-thick wall interface structure, including common concrete wall 1 and iron ore concrete wall 2, in the common concrete wall 1 and iron ore concrete wall 1 The junction of the sand concrete wall 2 is provided with several blocking structures 3 that prevent iron ore concrete from flowing to ordinary concrete during pouring, and the blocking structure 3 is covered with the interface of the ordinary concrete wall 2 and the iron ore sand concrete wall 3. . The blocking structure 3 can prevent the heavier iron ore concrete from flowing into the lighter ordinary concrete, and the two can be poured at the same time, avoiding the vertical construction joints caused by the staged pouring, and increasing the integrity and stability of the structure. The radiation protection performance of the structure is improved.

3, in order to further strengthen the blocking structure 3, the blocking structure includes a blocking plate 31, a plurality of reinforcing bars 32 for fixing the blocking plate 31, and the reinforcing bars 32 are fixed on the steel cage net of the precast wall, The spoiler 31 can prevent the heavier iron ore concrete from flowing to the ordinary concrete, and the steel bars are used to reinforce the spoiler 31 to prevent the lateral pressure from being applied to the spoiler 31 when the heavier iron ore concrete is poured quickly. The resulting impact damages the spoiler 31 or causes its displacement.

Referring to FIG. 4 , in order to further fix the baffle plate 31 , the baffle plate 31 includes a baffle portion 311 and fixing portions 312 disposed on both sides of the baffle portion 311 . The fixing portion 312 includes a curved portion 3121 that can be wound around the steel bar 32 , and a lap portion 3122 that connects adjacent spoilers 31 . The winding portion 3121 is used to fix a single spoiler 31 on the steel bar 32, and the overlapping portion 3122 is used for the connection between the adjacent spoilers 31 to ensure the seamless connection between the adjacent spoilers 31 and prevent the The heavier iron ore concrete flows through the gaps to the normal concrete.

The blocking portion 311 is provided with at least one positioning groove 3112 , and the positioning groove 3112 is fitted with a steel bar 32 to further strengthen the blocking plate 31 . Among them, the thickness of the spoiler 31 is 1-2mm, the weight of the spoiler 31 is relatively light, it can be directly fixed on the steel bar, the installation is quick, the transportation is convenient, and the processing is easy. The thickness of the plate is 1 mm.

Preferably, the quick and easy closing opening 3111 is a square hole of 5 mm*5 mm, and the quick and easy closing opening 3111 can make the steel bar under 12 mm pass through with a little force, which is convenient for piercing the reinforcing bar and bundling the reinforcing bar continuously. Wherein, the section of the baffle 31 is arcuate, and its inner concave surface faces the iron ore concrete wall 2. When pouring heavier iron ore concrete, the arcuate baffle 31 can firstly produce a certain buffer for the concrete, so as not to The concrete is made to directly impact the spoiler 31 .

Referring to FIG. 5 , in order to facilitate the insertion of transverse steel bars, the blocking portion 311 is provided with a plurality of quick and easy closing openings 3111 .

The working principle of the present embodiment is as follows: by setting the blocking structure 3 between the pre-cast common concrete wall 1 and the iron ore concrete wall 2, during simultaneous pouring, the iron ore concrete can be prevented from flowing to the common concrete, and simultaneous pouring can be realized. , which ensures the structural stability of the wall and improves the radiation protection effect of the wall.

Another aspect of the present embodiment provides a method for constructing a joint between ordinary concrete and iron ore concrete super-thick wall, comprising the following steps:

Before pouring the ordinary concrete wall 1 and the iron ore concrete wall 2, a blocking structure 3 is set at the junction of the two. The specific setting method is as follows: first laying the above blocking plate 31, the winding part 3121 of the blocking board 31 It is wound on the steel bar 32, and then the positioning groove 3112 is also clamped with the steel bar 32, and the spoiler 31 is further fixed. The lap joint 3122 is lapped to avoid gaps. The transverse reinforcement of the reinforcement cage passes through the quick and easy closing opening 3111. After fixing the above structure, the ordinary concrete wall 1 and the iron ore concrete wall 2 are poured at the same time. The body is integrally formed, and the blocking structure 3 can be arranged horizontally or vertically, and the whole construction method is simple and easy.

The embodiments of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention should be covered in within the protection scope of the present invention.

Claims (10)

1. The utility model provides a super thick wall body handing-over structure of ordinary concrete and iron ore sand concrete which characterized in that: including ordinary concrete wall (1) and iron ore sand concrete wall (2), iron ore sand concrete flow direction common concrete's choked flow structure (3) when the handing-over department of ordinary concrete wall (1) and iron ore sand concrete wall (2) is equipped with a plurality of prevents to pour, choked flow structure (3) are covered with the handing-over face of ordinary concrete wall (1) and iron ore sand concrete wall (2).

2. The ordinary concrete and iron ore sand concrete super-thick wall body joining structure according to claim 1, wherein: the flow blocking structure comprises a flow blocking plate (31) and a plurality of reinforcing steel bars (32) for fixing the flow blocking plate (31), wherein the reinforcing steel bars (32) are fixed on a reinforcing cage net of the precast wall body.

3. The ordinary concrete and iron ore sand concrete super-thick wall body joining structure according to claim 2, wherein: the spoiler (31) comprises a spoiler portion (311) and fixing portions (312) arranged on both sides of the spoiler portion (311).

4. The ordinary concrete and iron ore sand concrete super-thick wall body joining structure according to claim 3, wherein: the choke portion (311) is provided with a plurality of fast and easy closing-in ports (3111).

5. The ordinary concrete and iron ore sand concrete super-thick wall body joining structure according to claim 3, wherein: the fixing portion (312) comprises a winding portion (3121) which is curved and can be wound on the reinforcing steel bar (32), and a bridging portion (3122) which connects adjacent spoiler panels (31).

6. The ordinary concrete and iron ore sand concrete super-thick wall body joining structure according to claim 3, wherein: the choked flow portion (311) is provided with at least one positioning groove (3112), and the steel bars (32) are clamped in the positioning grooves (3112).

7. The ordinary concrete and iron ore sand concrete super-thick wall body joining structure according to claim 1, wherein: the thickness of the spoiler (31) is 1-2 mm.

8. The ordinary concrete and iron ore sand concrete super-thick wall body interfacing structure of claim 4, wherein: the quick and easy closing-in (3111) is a square hole with 5mm by 5 mm.

9. The ordinary concrete and iron ore sand concrete super-thick wall body joining structure according to claim 2, wherein: the section of the spoiler (31) is arc-shaped, and the inner concave surface of the spoiler faces the iron ore sand concrete wall (2).

10. A construction method for a joint of a common concrete and an iron ore sand concrete super-thick wall body is characterized by comprising the following steps:

s1, before the common concrete wall (1) and the iron ore sand concrete wall (2) are poured, a flow resisting structure (3) is arranged at the joint of the common concrete wall and the iron ore sand concrete wall, and the specific setting method comprises the following steps: paving the spoilers (31), wherein the inner concave surfaces of the spoilers (31) face the iron ore sand concrete wall (2), the winding parts (3121) of the spoilers (31) are wound on the steel bars (32), then the positioning grooves (3112) are also clamped with the steel bars (32), the steel bars (32) are fixed on the steel bar cage net in a bundling manner, two adjacent spoilers (31) are overlapped through respective overlapping parts (3122), and transverse steel bars of the steel bar cage pass through quick and easy closing-up parts (3111);

s2, after the structure is fixed, pouring is carried out in a mode of simultaneously pouring the common concrete wall (1) and the iron ore sand concrete wall (2), and the concrete walls are integrally formed.

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