CN106149972A - It is horseshoe-shaped prestressing force groove type plate bottom a kind of web - Google Patents

Abstract

The invention relates to the technical field of underground civil air defense engineering, in particular to a prestressed groove plate with a horseshoe-shaped bottom of the web, including a web, a wing plate and a concrete pouring layer covering the top of the web and the wing plate. Horseshoe-shaped, with horseshoe-shaped steel bars and prestressed longitudinal reinforcement at the bottom of the web; ventilation holes are set in the web, and reinforcement members are provided around the ventilation holes. The present invention can solve the problem that the distribution range of the web reinforcement is too large by designing the bottom of the web of the channel plate as a horseshoe shape, and at the same time increase the pressure area of the bottom to meet the calculation of local pressure at the bottom; Rectangular openings allow all kinds of ventilation pipes, fire water pipes, and heating pipes of buildings to pass through this hole, thereby reducing the floor height occupied by equipment, reducing the floor height of the channel plate structure, and improving economy. The opening position will be equipped with patented reinforcement components to ensure the structural bearing capacity.

Description

A prestressed channel plate with a horseshoe-shaped web bottom

technical field

The invention relates to the technical field of civil engineering, in particular to a prestressed groove plate with a horseshoe-shaped web bottom.

Background technique

At present, the prestressed concrete channel slab is a prefabricated reinforced concrete bearing member combined with a beam and a slab, which consists of a wide wing plate and two narrow and high webs. Prestressed concrete channel slabs have good structural mechanical properties, clear force transmission levels, and simple geometric shapes. They are economical load-bearing components that can be made into large spans, large loads, and large coverage areas. Applications. The traditional channel plate structure is a fully prestressed structure, the web of the member is thin, and the calculation of local compression at the bottom is not easy to satisfy. The reinforcement at the bottom is dense and distributed in a large range, which is not conducive to piercing holes at the web. In order to overcome the defects of the prior art, it is necessary to design a new type of grooved plate.

Contents of the invention

In order to solve the above problems, the present invention designs the bottom of the web of the channel plate into a horseshoe shape, which can solve the problem of too large distribution range of the web reinforcement, and at the same time increase the compression area of the bottom to meet the calculation of the local compression of the bottom.

The present invention is achieved through the following technical solutions:

A prestressed groove plate with a horseshoe-shaped web bottom, comprising two webs, a flange and a concrete pouring layer covering the tops of the web and the flange, and the web is located at the bottom of both ends of the flange. A plurality of stirrups, a plurality of web non-prestressed longitudinal reinforcements, a plurality of web prestressed longitudinal reinforcements and horseshoe-shaped structural reinforcements are arranged inside the web. The base of the web is horseshoe-shaped. The stirrups are located in the middle of the web. The plane where the steel bars on both sides of the stirrup are located is parallel to the axial cross-section of the web. The non-prestressed longitudinal reinforcement of the web is located in the middle and upper part of the web, and is located inside the steel bars on both sides of the stirrup. Horseshoe structural ribs are located at the bottom of the horseshoe of the web. The plane where the horseshoe-shaped structural reinforcement is located is parallel to the axial cross-section of the web. The web prestressed longitudinal reinforcement is located inside the horseshoe structural reinforcement. The two ends of the stirrup are 10~20cm beyond the top of the wing.

The wing plate is provided with a plurality of longitudinal ribs of the wing plate, a plurality of transverse ribs of the wing plate and a plurality of connecting tie bars of the wing plate. The transverse ribs of the wing plate and the longitudinal ribs of the wing plate intersect vertically and are pre-embedded inside the wing plate. The connecting tie bar of the wing plate is a common steel bar with hooks at both ends. One end of the connecting rib of the wing plate is connected with the longitudinal rib of the wing plate and the transverse rib of the wing plate located at the bottom of the wing plate, and the other end is 10~20cm beyond the top of the wing plate.

The concrete pour is placed on top of the wings. A plurality of longitudinal and transverse reinforcements are arranged in the concrete pouring layer. The longitudinal and transverse ribs are perpendicular to each other. The two ends of the stirrups and the flange connection tie bars are respectively welded to the longitudinal and transverse bars.

Furthermore, ventilation holes are also provided in the upper middle of the web. The vents are rectangular. A plurality of strengthening members are arranged in the web around the ventilation hole.

Further, the reinforcing member includes a plurality of pegs and steel plates. The steel plates are positioned around the ventilation holes and parallel to the edges of the ventilation holes. The studs are welded vertically to the steel plate.

Further, the concrete material of the web, the flange and the concrete pouring layer is ordinary concrete or high-strength concrete.

Further, the thickness of the poured concrete layer at the top of the wing plate is 10-20cm.

The invention provides a prestressed groove plate with a horseshoe-shaped web bottom. By designing the horseshoe-shaped bottom of the web of the groove plate, the problem of too large distribution range of the web reinforcement can be solved, and at the same time, the compression area of the bottom can be increased to meet the Calculation of local compression at the bottom. By reserving a rectangular opening at the web of the channel plate, all kinds of ventilation pipes, fire water pipes, and heating pipes of the building can pass through this hole, thereby reducing the floor height occupied by the equipment, reducing the floor height of the channel plate structure, and improving the economy. sex. The opening position will be equipped with patented reinforcement components to ensure the structural bearing capacity.

Description of drawings

Accompanying drawing 1 is that web bottom is the sectional structure schematic diagram of the prestressed groove plate of horseshoe shape among the present invention;

Accompanying drawing 2 is the facade structure schematic diagram of the prestressed trough plate of horseshoe shape at the bottom of the web among the present invention;

Accompanying drawing 3 is the partial structure schematic diagram near ventilation hole among the present invention;

Accompanying drawing 4 is the top view structure schematic diagram of the prestressed groove plate of horseshoe shape at the bottom of the web among the present invention;

In the figure: 1-web; 2-flange; 3-retarded concrete pouring layer; 11-stirrup; 12-web non-prestressed longitudinal reinforcement; 13-web prestressed longitudinal reinforcement; 14-horseshoe-shaped reinforcement; 15-ventilation hole; 151-strengthening member; 152-steel plate; 153-bolt; 21-flange transverse reinforcement; 22-flange connection tie reinforcement; 23-flange longitudinal reinforcement; 31-transverse reinforcement;

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can understand the present invention.

A prestressed channel plate with a horseshoe-shaped web bottom, including two webs 1, a wing 2, and a concrete pouring layer 3 covering the tops of the web 1 and the wing 2, and the web 1 is located at both ends of the wing 2 bottom. The interior of the web 1 is provided with a plurality of stirrups 11 , a plurality of web non-prestressed longitudinal reinforcements 12 , a plurality of web prestressed longitudinal reinforcements 13 and horseshoe-shaped structural reinforcements 14 . The bottom of the web 1 is horseshoe-shaped. The stirrup 11 is located in the middle of the web 1 . The plane where the steel bars on both sides of the stirrup 11 are located is parallel to the axial cross-section of the web 1 . The non-prestressed longitudinal reinforcement 12 of the web is located at the middle and upper part of the web 1, and is located inside the reinforcing bars on both sides of the stirrup 11. The horseshoe-shaped structural rib 13 is located at the horseshoe-shaped bottom of the web 1 . The plane where the horseshoe-shaped rib 13 is located is parallel to the axial cross-section of the web 1 . The web prestressed longitudinal reinforcement 13 is located inside the horseshoe-shaped structural reinforcement 14 . The two ends of stirrup 11 exceed the top 15cm of wing plate 2.

The wing plate 2 is provided with a plurality of wing plate longitudinal ribs 23 , a plurality of wing plate transverse ribs 21 and a plurality of wing plate connecting tie bars 22 . The flange transverse ribs 21 and the flange longitudinal ribs 23 intersect vertically and are pre-embedded inside the flange 2 . Flange connection tie bar 22 is the common steel bar with crotch hook at both ends. One end of the connecting rib 22 of the wing plate is connected with the longitudinal rib 23 and the transverse rib 21 of the wing plate located at the bottom of the wing plate 2 , and the other end exceeds the top of the wing plate 2 by 15 cm.

The concrete pouring layer 3 is located on the top of the wing plate 2 . A plurality of longitudinal bars 32 and transverse bars 31 are arranged in the concrete pouring layer 3 . The longitudinal ribs 32 and the transverse ribs 31 are perpendicular to each other. The two ends of the stirrup 11 and the flange connection tie bars 22 are respectively welded to the longitudinal bars 32 and the transverse bars 31 .

In this embodiment, the upper middle part of the web 1 is also provided with ventilation holes 15 . The ventilation holes 12 are rectangular. A plurality of reinforcing members 151 are provided in the web around the ventilation hole 12 .

In this embodiment, it is characterized in that the reinforcing member 151 includes a plurality of pegs 153 and steel plates 152 . The steel plate 152 is located around the ventilation hole 12 and parallel to the edge of the ventilation hole. The peg 153 is vertically welded on the steel plate 152 .

In this embodiment, the concrete material of the web 1 , the wing 2 and the concrete pouring layer 3 is ordinary concrete or high-strength concrete.

In this embodiment, the thickness of the concrete pouring layer 3 at the top of the wing plate 2 is 15 cm.

The above embodiments are only used to illustrate the present invention rather than limit the technical solution described in the present invention; therefore although this specification has described the present invention in detail with reference to the above-mentioned various embodiments, those of ordinary skill in the art should understand that The present invention can be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims (5)

1. A prestressed trough plate with a horseshoe-shaped web bottom, including two webs (1), wing plates (2) and a concrete pouring layer covering the top of the web (1) and wing plate (2) ( 3), the web (1) is located at the bottom of both ends of the wing plate (2); it is characterized in that the interior of the web (1) is provided with a plurality of stirrups (11), and a plurality of webs are not prestressed Longitudinal reinforcement (12), multiple web prestressed longitudinal reinforcement (13) and horseshoe-shaped structural reinforcement (14); the bottom of the web (1) is horseshoe-shaped; the stirrup (11) is located on the web (1) the middle of the middle of the stirrup (11); the plane where the steel bars on both sides of the stirrup (11) is parallel to the axial cross-section of the web (1); the non-prestressed longitudinal reinforcement (12) of the web is located in the middle and upper part of the web (1) , and located on the inner sides of the reinforcement bars on both sides of the stirrup (11); the horseshoe-shaped structural reinforcement (13) is located at the horseshoe-shaped bottom of the web (1); the plane where the horseshoe-shaped structural reinforcement (13) is located Parallel to the cross section; the web prestressed longitudinal reinforcement (13) is located inside the horseshoe-shaped structural reinforcement (14); the two ends of the stirrup (11) exceed the top of the wing plate (2) by 10~20cm; The wing plate (2) is provided with a plurality of wing plate longitudinal ribs (23), a plurality of wing plate transverse ribs (21) and a plurality of wing plate connection tie bars (22); the wing plate transverse ribs (21) and wing The plate longitudinal ribs (23) are pre-embedded inside the wing plate (2) perpendicular to each other; the wing plate connecting bars (22) are ordinary steel bars with hooks at both ends; the wing plate connecting bars (22) One end is connected with the flange longitudinal rib (23) and the flange transverse rib (21) located at the bottom of the flange (2), and the other end is 10~20cm beyond the top of the flange (2); The concrete pouring layer (3) is located on the top of the wing plate (2); the concrete pouring layer (3) is provided with a plurality of longitudinal bars (32) and transverse bars (31); between the longitudinal bars (32) and the transverse bars (31) are perpendicular to each other; the two ends of the stirrups (11) and the flange connection tie bars (22) are respectively welded to the longitudinal bars (32) and the transverse bars (31). 2. A prestressed channel plate with a horseshoe-shaped web bottom as claimed in claim 1, characterized in that, the upper middle part of the web (1) is also provided with a ventilation hole (15); the ventilation hole (15) is rectangular; a plurality of reinforcing members (151) are arranged in the web around the ventilation hole (12). 3. A prestressed channel plate with a horseshoe-shaped web bottom as claimed in claim 2, characterized in that, the reinforcement member (151) includes a plurality of pegs (153) and steel plates (152 ); the steel plate (152) is located around the ventilation hole (15) and parallel to the edge of the ventilation hole; the stud (153) is vertically welded on the steel plate (152). 4. A prestressed channel plate with a horseshoe-shaped web bottom as claimed in claim 3, characterized in that the concrete material of the web (1), wing plate (2) and concrete pouring layer (3) For ordinary concrete or high-strength concrete. 5 . The prestressed channel plate with a horseshoe-shaped web bottom as claimed in claim 4 , wherein the thickness of the concrete pouring layer ( 3 ) at the top of the wing plate ( 2 ) is 10-20 cm. 6 .