JPS5967210U - Composite formwork for manufacturing post-tension T-type PC girders - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of a PC girder, FIG. 2 is a cross-sectional plan view thereof, and FIG. 3 is a sectional view of an elevated road. Figures 4 and 5 are cross-sectional views of the PC girder, Figure 6 is a cross-sectional view illustrating the reinforcement arrangement, Figure 7 is a side view showing the connected state of the first and second formwork blocks, and Figure 8. 9 is a detailed explanatory diagram of the second to fourth formwork units, FIG. 9 is a cross-sectional view of the right half of the same formwork unit in a portion corresponding to the web body, and FIG. 10 is a partial cross-sectional view of another device aspect of the first formwork part. , Fig. 11 is a front view of the first formwork unit, Fig. 12 is a side view of the same, and Fig. 12 is a front view of the first formwork unit.
3 is a plan view of the same, and FIG. 14 is a perspective view showing the formwork attachment mechanism. DESCRIPTION OF SYMBOLS 1... Upper flange, 2... Lower flange, 3... Web, 7... PC steel material, 15... Diaphragm, 1
6... Expanded area, D, E, F, G, Z... Formwork unit, X, Y... Formwork block. 16, 15. 4 3 , 2 15 16

Claims (1)

[Claims for Utility Model Registration] An upper flange, a lower flange having a middle narrower than the width of the upper flange, and a web that is sandwiched between the middle than the middle, and has a T-shaped cross section; , there is a horizontal tightening diaphragm having a width equal to the width of the core in the middle part in the longitudinal direction of the girder, and an enlarged part that widens from the web width to a width equal to the width of the core as it reaches the end side at both ends in the longitudinal direction of the girder. This is a formwork for manufacturing a PC girder in which PC steel materials for prestress introduction by boss 1 to tension are buried across both ends of the girder, and the entire formwork is releasably connected to each other. It consists of a first formwork block for molding the lower surface of the lower flange, and a second formwork block for molding parts other than the lower surface of the lower flange, and the second formwork block is connected by a bolt in the longitudinal direction of the girder. It consists of a plurality of formwork units, and in each formwork unit, the formwork part of the web equivalent part can be changed to one with a different height dimension from the formwork part for the upper flange and the lower flange. In the first formwork unit for end molding, the formwork part for setting the prestressing steel material and the formwork part for attaching it are made of metal or wood, and the remaining formwork is The parts are all made of metal, and in the second formwork unit for molding the tire flam part and the third formwork unit for forming the belly expansion part, the formwork parts for molding both side parts of the upper flange are made of metal or wood. The formwork part for forming the main part of the upper flange and the formwork part for forming the side part of the lower flange are made of metal, and the formwork part for forming the remaining part is made of wood. Yes, in the remaining fourth formwork unit for forming the standard cross section, the formwork part for forming both sides of the upper flange is made of metal or wood, and all the remaining formwork parts are made of metal, and A composite formwork for manufacturing a boss tension T-type PC girder, wherein the first formwork block is comprised of a plurality of metal formwork units connected by bolts in the longitudinal direction of the girder.