CN1598206A

CN1598206A - Prestressed precast concrete board with rib

Info

Publication number: CN1598206A
Application number: CN 200410046665
Authority: CN
Inventors: 吴方伯
Original assignee: Individual
Current assignee: Wu Chong
Priority date: 2004-08-17
Filing date: 2004-08-17
Publication date: 2005-03-23
Anticipated expiration: 2024-08-17
Also published as: CN1254589C

Abstract

The invention discloses a prestressing steel bar concrete preprocessed component board with rib, which includes a steel bar concrete bottom board, a steel bar concrete lengthwise rib, two sides of the lengthwise rib of the preprocessed component board are arranged with long stripe type or long arc type apertures. The eccentricity distance of the component board is the distance from the prestressing steel bar to the preprocessed component board section center, the long stripe type or long arc type apertures divide the instance between the bottom board and the lengthwise rib, the reverse arc value of the preprocessed component board is decreased, and it is very convenient.

Description

A kind of prestressed reinforced concrete precast member board with ribbing

Technical field:

The present invention relates to the realm of building construction, specifically refer to a kind of prestressed reinforced concrete precast member board with ribbing.

Background technology:

At present, floor spiced by steel reinforced concrete can bear bidirectional load, and good integrity does not need on-the-spot formwork, and cost is low, and lifting, transportation are easily.Floor spiced precast member for reinforcing bar concrete is used Ribbed Bar concrete prefabricated structural board (seeing 03227765.2 patent application) usually, both sides have hole under the precast member for reinforcing bar concrete longitudinal rib, now wear the hole that reinforcing bar passes both sides under the prefabricated units longitudinal rib, connect the polylith reinforced concrete prefabricated structural board, make the crisscross layout of reinforcing bar, floor spicedly can bear bidirectional load.But because the hole of both sides is worn reinforcing bar usefulness usually under the longitudinal rib, it is little that open in the aperture, this precast member board is had the following disadvantages: 1, this prefabricated units strip prestressing force makes on the prestressed reinforced concrete precast member board with ribbing and produces eccentric throw, under the prestressing force effect, precast member board produces antiarch, make out-of-flatness at the bottom of the plate, eccentric throw is big, and the antiarch value is big; Eccentric throw is little, and the antiarch value is just little, and small holes can not reduce the antiarch value; 2, the aperture is opened for a short time, and it is also inconvenient now to wear reinforcing bar.

Summary of the invention:

The object of the present invention is to provide a kind ofly can reduce the antiarch value, make at the bottom of the plate smoothly, now wear reinforcing bar prestressed reinforced concrete precast member board also with ribbing easily.

The object of the present invention is achieved like this, this prestressed reinforced concrete precast member board with ribbing comprises reinforced concrete floor, steel concrete longitudinal rib, both sides have strip or long arc shape hole under the reinforced concrete prefabricated structural board longitudinal rib.

Because the eccentric throw of prestressed reinforced concrete precast member board with ribbing is the distance of prestressed reinforcement to the precast member board cross section centre of form, the distance that strip or long arc shape hole separate base plate and longitudinal rib at the hole place, reduced the eccentric throw at strip hole place of precast member board, precast member board antiarch value is reduced, also just smooth at the bottom of the plate, it is also convenient now to wear reinforcing bar.

Description of drawings:

Fig. 1 prestressed reinforced concrete precast member board longitudinal rib both sides have strip pore space structure schematic diagram

Fig. 2 prestressed reinforced concrete precast member board longitudinal rib both sides have long arc shape pore space structure schematic diagram

The two rib precast member board longitudinal rib both sides of Fig. 3 have strip pore space structure schematic diagram

The two rib precast member board longitudinal rib both sides of Fig. 4 have long arc shape pore space structure schematic diagram

Fig. 5 list rib " worker " font precast member board longitudinal rib both sides have strip pore space structure schematic diagram

Two rib " worker " the font precast member board longitudinal rib both sides of Fig. 6 have strip pore space structure schematic diagram

Fig. 7 list rib " worker " font precast member board longitudinal rib both sides have long arc shape pore space structure schematic diagram

Two rib " worker " the font precast member board longitudinal rib both sides of Fig. 8 have long arc shape pore space structure schematic diagram

The specific embodiment:

With reference to figure 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, this prestressed reinforced concrete precast member board with ribbing of Fig. 8, comprise reinforced concrete floor 1, steel concrete longitudinal rib 2, have strip hole 3 or long arc shape hole 4 in 2 times both sides of reinforced concrete prefabricated structural board longitudinal rib, ratio L/H 〉=1.5 of described strip hole 3 or long arc shape hole 4 bottom side length L and the high H of hole.

The eccentric throw of prestressed reinforced concrete precast member board with ribbing is the distance of prestressed reinforcement 5 to the precast member board cross section centre of form, strip hole 3 or long arc shape hole 4 are long with the distance L that longitudinal rib 2 separates with base plate 1 at

hole

3,4 places, reduced the eccentric throw of precast member board, strip hole 3 or long arc shape hole 4 have reduced the antiarch value like this, make at the bottom of the plate 1 smoothly, it is also convenient now to wear reinforcing bar.Be used for when floor spiced, the polylith precast member board is close to, now wear and add prestressing force after reinforcing bar passes strip hole 3 or long arc shape hole 4, concreting again in the groove that adjacent both sides of the chest form makes the polylith precast member board, now wears reinforcing bar, cast-in-situ concrete is combined into integral body.

Claims

1, a kind of Ribbed Bar concrete prefabricated structural board comprises reinforced concrete floor, steel concrete longitudinal rib, it is characterized in that: both sides have strip or long arc shape hole under the precast member for reinforcing bar concrete longitudinal rib.

2, Ribbed Bar concrete prefabricated structural board according to claim 1 is characterized in that: ratio L/H 〉=1.5 of described strip or long arc shape hole bottom side length L and the high H of hole.