Construction method of groove cover plate

Abstract

The invention relates to a construction method of a trench cover plate, which comprises the following steps that an embedded base is constructed on a trench side wall, the embedded base is of a structure shaped like a Chinese character'ji 'and is provided with two supporting positions facing the interior of a trench, and the two supporting positions are arranged up and down; wherein the upper first supporting position is used for installing a groove cover plate body in a general section, and the lower second supporting position is used for installing a groove cover plate body in a risk section; the groove cover plate body is installed through the first supporting position; a groove cover plate body provided with a locking device is installed through the second supporting position, and the groove cover plate body is locked and limited at the position of the second supporting position through the locking device. The cover plate has the advantages that structural connection is reliable, the cover plate is prevented from flying up, the upturning effect is good, the embedded base is manufactured in a factory, the flatness of the cover plate can be effectively controlled, and the cover plate has good smoothness and comfort when serving as a railway evacuation channel.

Description

Technical Field

[0001] The present invention relates to the field of civil engineering technology, and in particular to a method for constructing a trench cover, which is mainly applicable to trench or cable trough covers in railway projects, and is particularly applicable to high-speed railways, mountain railways, and railway projects in strong wind areas; it can also be used to prevent flooding and top cover in municipal projects. Background Art

[0002] When a train is running at high speed or there is a strong wind, the air flow rate around it is very high, causing the surrounding air pressure to drop, which often leads to violent vibration of the gutter and cable trough cover or even "flying up" and hitting the car body or falling on the railway rails, causing safety accidents.

[0003] At present, the usual ditch and cable trough covers are made of reinforced concrete structures, relying on their own weight to counter the flying problem caused by negative pressure. In reality, covers still often fly when the wind speed is abnormal in valleys or high-speed rail tunnels. Traditional concrete covers are heavy, easy to damage, and have poor flatness in actual use. They are also poor in walking comfort and safety when used as personnel evacuation passages. When trains pass frequently at high speed, wind pressure and wheels and rails can cause the covers to vibrate and accelerate the damage of the covers. At the same time, urban waterlogging is frequent, and municipal manhole covers are often overturned and washed away, causing people to fall into the wells in the water. Summary of the invention

[0004] The purpose of the present invention is to provide a construction method for a groove cover plate in accordance with the above-mentioned deficiencies of the prior art. The design of a prefabricated base is compatible with the installation needs of the groove cover plate body in general areas and risks. At the same time, the limiting cooperation between the prefabricated base and the groove cover plate is utilized to solve the problem of the groove cover plate's own weight being insufficient to resist the flying up, flipping over, etc. caused by external forces.

[0005] The purpose of the present invention is achieved by the following technical solutions: A construction method for a trench cover plate, used for installing a trench cover plate body onto a trench side wall, characterized in that the construction method comprises the following steps: An embedded base is constructed on the side wall of the groove. The embedded base is an up-shaped structure, and is provided with two support positions facing the inside of the groove. The two support positions are arranged one above the other, wherein the first support position located above is used for the installation of the groove cover body in general areas, and the second support position located below is used for the installation of the groove cover body in risk areas; Using the first support position to install the groove cover plate body; The groove cover plate body provided with a locking device is installed by utilizing the second supporting position, and the groove cover plate body is locked and limited at the position of the second supporting position by the locking device.

[0006] The locking device includes a spring and a pin. One end of the spring is connected to the pin hole reserved on the main body of the trench cover plate, and the other end is connected to the pin. When the spring is compressed, the pin retracts into the pin hole and the pin is reset by the rebound of the spring.

[0007] The pin is a Z-shaped pin. The height of the main body of the trench cover plate corresponds to the first support position. The Z-shaped pin bypasses the first support position and is locked and limited at the position of the second support position.

[0008] The top surface of the pin is flush with the surface of the main body of the trench cover plate, and a protrusion is provided on the top surface of the pin.

[0009] The embedded base is implemented synchronously with the pouring of the trench side wall.

[0010] Longitudinal anti-slip blocks are arranged on the embedded base at regular intervals of the cover plate modulus.

[0011] The precast base and the trench side wall are strengthened and connected by anchor bars.

[0012] The advantages of the present invention are: 1) The structural connection is reliable, and the effect of preventing the cover plate from flying up and turning over is good.

[0013] 2) The embedded base is manufactured in the factory, which can effectively control the flatness of the cover plate, and has good smoothness and comfort when used as a railway evacuation passage.

[0014] 3) The self-weight of the cover plate system is small, which is convenient for transportation, installation and disassembly.

[0015] 4) When used as a manhole cover for municipal engineering, it can effectively prevent the manhole cover from being turned over by rainwater during urban waterlogging, and avoid the occurrence of accidents of pedestrians falling into the well.

[0016] 5) It has better reliability and compatibility, good innovation and application value, and is worthy of popularization. Brief Description of the Drawings

[0017] Figure 1 is the layout plan of the present invention; Figure 2 is the installation structure schematic diagram of the present invention; Figure 3 is the enlarged detail drawing of the connection between the pin and the embedded base in the present invention. Detailed Description of the Invention

[0018] The features of the present invention and other related features will be further described in detail below with reference to the drawings through embodiments for the understanding of those skilled in the same industry: Such as Figures 1-3As shown, the numbers 1-8 in the figure respectively represent: embedded base 1, pin 2, spring 3, pin hole 4, groove side wall 5, groove cover plate body 6, anchor bar 7, protrusion 8.

[0019] Example: Figures 1 to 3 As shown, the construction method of the groove cover plate in this embodiment is used to install the cover plate above the groove when constructing the water ditch, cable trough, etc. In this embodiment, the long strip grooves such as the water ditch and cable trough extend along the design direction, which are mainly divided into general sections and risky sections, wherein the risky section refers to the section where the cover plate is prone to violent vibration or even "flying" due to the high air flow speed, while the general section, on the contrary, refers to the section where the cover plate is not easy to vibrate.

[0020] On this basis, the construction method of the trench cover in this embodiment includes the following steps: 1) The factory manufactures the embedded base 1, which is an upper U-shaped structure, and has two support positions including a first support position and a second support position. The two support positions are both arranged toward the inner side of the groove, and the first support position is arranged above the second support position.

[0021] The embedded base 1 is provided with anchor bars 7 at its bottom during production, and the anchor bars 7 are used to strengthen the connection performance between the embedded base 1 and the groove side wall 5. The spacing of the anchor bars 7 is arranged at intervals according to the force calculation requirements; when constructing long grooves such as water ditches and cable troughs, the embedded base 1 with anchor bars 7 is fixed to the groove side wall 5, and the embedded is cast together to ensure smoothness.

[0022] 2) The factory manufactures the groove cover body 6 according to the design dimensions. The groove cover body 6 is divided into a cover corresponding to a general area and a groove cover body corresponding to a risk area. The groove cover body corresponding to the risk area needs to reserve a pin hole 4 at the corresponding position during manufacture. However, in order to facilitate processing and manufacturing, the groove cover body with the pin hole 4 can also be manufactured uniformly.

[0023] 3) The factory manufactures the pin 2, which is in a "Z" shape as a whole and generally has a square cross section to ensure reliable contact between it and the support provided by the embedded base 1. At the same time, a protrusion 8 is provided on the top of the pin 2 at a flush position with the groove cover body 6 for easy manipulation.

[0024] 4) After the groove cover body 6, spring 3 and pin 2 are transported to the construction site, the groove cover body 6 is installed according to the division of general areas and risk areas, which specifically includes: Installation of the groove cover body in general areas: Figure 2 As shown, the groove cover plate body 6 is directly laid on the first supporting position of the prefabricated base 1 , and its top surface is flush with the top surfaces of the prefabricated base 1 and the groove side wall 5 .

[0025] Installation of the trench cover plate body in risk areas: As Figure 3 shown, insert the spring 3 and the pin 2 into the pin hole 4 to complete the assembly of the trench cover plate body 6.

[0026] Use the protrusion 8 to push the pin 2 so that it retracts into the pin hole 4, place it on the embedded base 1, release the pin 2, and rely on the resilience of the spring 3 to insert the lower part of the pin 2 into the second support position provided by the embedded base 1 to complete the installation of the entire trench cover plate body 6. In this embodiment, the top surface of the pin 2 is flush with the surface of the trench cover plate body 6, reducing breakage and unevenness, and ensuring the comfort and safety of walking on the evacuation passage; at the same time, since the pin adopts a Z-shaped design, it bypasses the first support position on the embedded base 1 and locks and limits the position at the second support position, ensuring the surface smoothness between the trench cover plate bodies laid in general areas and risk areas.

[0027] In this embodiment, as Figure 1 shown, locking devices composed of pins 2 and springs 3 are respectively arranged on both sides of the trench cover plate body 6 to ensure that both sides of the trench cover plate body 6 can be effectively locked and limited, thereby improving the anti-flying effect. At the same time, two locking devices are respectively arranged on both sides of the trench cover plate body 6, and the two locking devices are arranged at a certain distance interval along the extension direction of the trench cover plate body 6, also to ensure that the trench cover plate body 6 can be firmly locked.

[0028] In the specific implementation of this embodiment: The locking devices are arranged at 1 / 4 of each side of the trench cover plate body 6.

[0029] The trench cover plate body 6 and the embedded base 1 can be made of iron, reinforced plastic, etc. according to the use scenario and service life. To prevent the trench cover plate body 6 from sliding longitudinally, a longitudinal anti-slip block is provided at every 3-5 cover plate modules on the embedded base 1 to limit the longitudinal direction of the trench cover plate body 6.

[0030] Although the above embodiments have described in detail the concept and embodiments of the present invention with reference to the drawings, those of ordinary skill in the art can recognize that various improvements and transformations can still be made to the present invention without departing from the scope defined by the claims, so they will not be elaborated one by one here.

Claims

1. A method for constructing a trench cover plate, for installing a trench cover plate body onto a trench side wall, characterized in that: The construction method comprises the following steps: An embedded base is constructed on the side wall of the groove. The embedded base is an up-shaped structure, and is provided with two support positions facing the inside of the groove. The two support positions are arranged one above the other, wherein the first support position located above is used for the installation of the groove cover body in general areas, and the second support position located below is used for the installation of the groove cover body in risk areas; Using the first support position to install the groove cover plate body; The groove cover plate body provided with a locking device is installed by utilizing the second supporting position, and the groove cover plate body is locked and limited at the position of the second supporting position by the locking device.

2. A method for constructing a trench cover according to claim 1, characterized in that: The locking device includes a spring and a pin, one end of the spring is connected to the pin hole reserved in the groove cover plate body, and the other end is connected to the pin; the pin retracts into the pin hole when the spring is compressed and the pin is reset by the rebound of the spring.

3. A method for constructing a trench cover according to claim 2, characterized in that: The pin is a Z-shaped pin, the groove cover plate body corresponds to the height of the first support position, and the Z-shaped pin bypasses the first support position and is locked and limited at the position of the second support position.

4. A construction method for a trench cover according to claim 2, characterized in that: The top surface of the pin is flush with the surface of the groove cover plate body, and a protrusion is provided on the top surface of the pin.

5. The construction method of a trench cover according to claim 1, characterized in that: The embedded base is cast synchronously with the groove side wall.

6. A construction method for a trench cover according to claim 5, characterized in that: The embedded base is provided with longitudinal anti-slip blocks at regular cover plate modules.

7. A method for constructing a trench cover according to claim 5, characterized in that: The prefabricated base and the groove side wall are connected to each other through anchor bars.

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