Finalized prefabricated type reinforced concrete support cover plate and construction method

A reinforced concrete, prefabricated assembly technology, applied in excavation, infrastructure engineering, construction, etc., can solve problems such as unfavorable safe and civilized construction, time-consuming and laborious, and achieve the effect of being conducive to safe and civilized construction control, reducing operation time, and easy construction.

Pending Publication Date: 2019-03-08

SHANGHAI NO 7 CONSTR

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AI-Extracted Technical Summary

Problems solved by technology

[0004] Aiming at the problem in the prior art that when there are components that collide with the trestle slab, such as steel columns, it is necessary to open holes on the cast-in-place reinforced concrete trestle slab, which is time-consuming and laborious and is not conducive ...

Abstract

The invention discloses a finalized prefabricated type reinforced concrete support cover plate and a construction method, and belongs to the technical field of construction engineering. The finalizedprefabricated type reinforced concrete support cover plate is used for being mounted at the collision position of a support stack bridge and a collision component in a cast-in-place reinforced concrete support structure, an L-type rabbet is manufactured at the collision position of the support stack bridge, the cover plate is prefabricated in advance, and the cover plate is hoisted to the L-type rabbet after the support stack bridge is maintained. The finalized prefabricated type reinforced concrete support cover plate is prefabricated in advance, the number of field construction staff is greatly reduced, the operation time is shortened, and time and labor are saved. When the structure is provided with components like steel stand columns which collide with the stack bridge, particular holing is not needed, the construction demands are met, and safe and civilized construction control is facilitated. Construction is easy and convenient, and the cover plate is directly hoisted to the corresponding position.

Application Domain

Excavations

Technology Topic

RebarReinforced concrete +2

Image

Examples

Experimental program(2)

Example Embodiment

[0031] Example one

[0032] Such as figure 1 Shown, see also Figure 2 to Figure 5 , The shaped prefabricated reinforced concrete support cover plate 20 provided in this embodiment is used for the collision between the supporting bridge 10 and the collision member installed in the cast-in-place reinforced concrete supporting structure, and the supporting bridge 10 is at the collision An L-shaped tongue-and-groove 13 is made, and the cover plate 20 is prefabricated in advance, and is configured to hoist the cover plate 20 to the L-shaped tongue-and-groove 13 after the maintenance of the supporting trestle bridge 10 is completed.

[0033] Such as figure 1 As shown, in this embodiment, the supporting trestle bridge 10 includes a beam body 11, the supporting trestle bridge 10 is provided with a support 12 at the collision point, and the support 12 corresponding to the outside of the supporting trestle bridge 10 is made The L-shaped tongue and tongue 13.

[0034] Such as figure 1 As shown, in this embodiment, the height of the support 12 is 650 mm and the width is 650 mm, and the height of the L-shaped tongue and groove 13 is 250 mm and the width is 150 mm.

[0035] Such as figure 1 Shown, see also figure 2 In this embodiment, a double-sided bidirectional steel bar 14 with a Φ18 pitch of 150mm is arranged at a position not corresponding to the support 12 in the supporting trestle bridge 10, and the position of the supporting trestle bridge 10 corresponding to the support 12 There are eight long Φ25 upper steel bars 15 arranged.

[0036] Such as figure 1 As shown, in this embodiment, each side of the support 12 is arranged with four full-length Φ25 steel bars, that is, supporting side steel bars 16, and the bottom of the support 12 is arranged with 8 full-length Φ25 lower steel bars 17, so The support 12 is arranged with stirrups with a Φ12 pitch of 300 mm, that is, the first stirrup 18 along the height direction, and the support 12 is arranged with Φ10 stirrups with a pitch of 150 mm, that is the second stirrup 19 along the width direction.

[0037] Such as image 3 Shown, see also Figure 4-Figure 5 In this embodiment, the cover plate 20 is provided with two-way upper skin steel bars 21 and two-way lower skin steel bars 22, and the upper end surface of the cover plate 20 is pre-embedded with four suspension bars 23 symmetrical along its centerline. The portions of the four hanging ribs 23 extending out of the cover plate 20 form four rings, and the apex of each of the four rings is not higher than the upper end surface of the cover plate 20.

[0038] Such as image 3 Shown, see also Figure 4 In this embodiment, the cover plate 20 has a length of 3000 mm, a width of 1000 mm, and a thickness of 250 mm, which can meet the traffic requirements of vehicles under 70t. The upper skin steel bars 21 in the cover plate 20 are arranged as two-way steel bars with a Φ20 pitch of 200 mm, and the lower skin steel bars 22 in the cover plate 20 are arranged as two-way steel bars with a Φ20 pitch of 100 mm.

[0039] Such as Figure 4 As shown, in this embodiment, a recessed groove 24 is provided in the cover plate 20 at a position corresponding to each suspension rib 23, and the depth of the groove 24 is 50 mm. Such as Figure 5 As shown, each suspension bar 23 is a Φ20 suspension bar, the shape of which is an arch, and has a straight line segment 231 and an arc line segment 232. The straight line segment 231 has a length of 150 mm and the corresponding straight line distance of the arc line segment 232 is 150 mm. , The reinforcement arrangement of the reinforcement at 23 of each lifting reinforcement.

[0040] More specifically, the four sides of the cover plate 20 are edged by channel steel.

[0041] The shaped prefabricated assembled reinforced concrete support cover 20 of the present invention is prefabricated in advance, so it can greatly reduce on-site construction workers, save construction time and on-site cast-in-place workload, thereby reducing operation time, saving time and labor.

[0042] Using the present invention, when the structure has components such as steel columns that collide with the trestle slab, there is no need to deliberately open holes, which meets construction requirements and is beneficial to safe and civilized construction control.

[0043] The construction of the present invention is simple, and the cover plate 20 can be directly hoisted to the corresponding position.

[0044] The cover plate 20 of the present invention realizes one board for multiple purposes, can be used as a trestle bridge cover, and can be spliced into a temporary road after the trestle bridge is removed, which can be recycled and is green and environmentally friendly.

Example Embodiment

[0045] Example two

[0046] The construction method of the stereotyped prefabricated assembled reinforced concrete support cover plate in the first embodiment is executed according to the following steps:

[0047] Prefabricated cover;

[0048] Pour the supporting trestle bridge on site and make L-shaped tongue and groove;

[0049] After the maintenance of the supporting trestle bridge is completed, the cover plate is hoisted to the L-shaped tongue and groove.

PUM

Property	Measurement	Unit
Height	650.0	mm
Width	650.0	mm
Height	250.0	mm

Description & Claims & Application Information

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Finalized prefabricated type reinforced concrete support cover plate and construction method

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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