阅读说明：本技术 一种拱形混凝土梁的模板支设方法 (Formwork erecting method for arched concrete beam ) 是由 员作义 田鹏刚 张风亮 边兆伟 张少雄 毛冬旭 张搏宇 马恺 陈力莹 李晶晶 于 2021-07-18 设计创作，主要内容包括：本发明涉及建筑模板领域,公开了一种拱形混凝土梁的模板支设方法,包括以下步骤：步骤一、在原砖拱上放好内套拱梁定位线,并钻孔,植拉结钢筋；步骤二、新增内套拱梁的纵向受力钢筋和箍筋绑扎,并将箍筋和拉结钢筋绑扎；步骤三、将定位螺杆与定位钢筋均同纵向受力钢筋连接；步骤四、配置木模板,在木模板上开孔,将定位螺杆穿过木模板,在木模板外侧安装横向方木,在横向方木底部间隔一定距离安装并排的两根纵向方木,同时紧固定位螺杆,夹紧纵向方木,调整模板弧度,并紧固模板系统。本发明提出了一种结构简单、设计合理、投入成本较低且现场加工直接可以定型的砖石拱桥内套拱模板支设方法,可节约施工成本和缩短施工周期,提高现场施工效率。(The invention relates to the field of building templates, and discloses a template supporting method of an arched concrete beam, which comprises the following steps: firstly, placing an inner sleeve arched beam positioning line on an original brick arch, drilling holes, and planting tie bars; step two, binding longitudinal stressed steel bars and stirrups of the newly-added inner sleeve arched beam, and binding the stirrups and the tie steel bars; thirdly, connecting the positioning screw rod and the positioning steel bar with the longitudinal stress steel bar; and step four, configuring a wood template, forming a hole in the wood template, penetrating a positioning screw through the wood template, mounting a transverse square timber outside the wood template, mounting two longitudinal square timbers side by side at the bottom of the transverse square timber at a certain distance, simultaneously fastening the positioning screw, clamping the longitudinal square timber, adjusting the radian of the template, and fastening a template system. The method for erecting the inner sleeve arch template of the masonry arch bridge, provided by the invention, has the advantages of simple structure, reasonable design, lower investment cost and capability of directly shaping in field processing, and can save the construction cost, shorten the construction period and improve the field construction efficiency.)

1. A formwork erecting method for an arched concrete beam is characterized by comprising the following steps:

step one, paying off an original brick arch, and drilling: placing an inner sleeve arched beam positioning line on an original brick arch (9), drilling a hole on the brick arch, and planting a tie bar (4);

step two, binding the steel bars of the newly added inner sleeve arch: binding longitudinal stress steel bars (7) and stirrups (6) of the newly added inner sleeve arched beam (8) according to the position of the inner sleeve arched beam (8) with the positioning line placed in the first step, and binding the stirrups (6) and the tie steel bars (4) at the same time;

step three, positioning steel bar installation: connecting the positioning screw rod (11) and the positioning steel bar (10) with the longitudinal stress steel bar (7), and fixing the positioning screw rod (11) and the positioning steel bar (10);

step four, template installation: configuring a wood template (1), punching holes in the wood template (1) according to the position of a positioning screw (11) in the third step, enabling the positioning screw (11) to penetrate through the wood template (1), installing transverse square timbers (3) on the outer side of the wood template (1), installing two longitudinal square timbers (2) side by side at a certain distance at the bottom of each transverse square timbers after the transverse square timbers are installed, simultaneously tightly fixing the positioning screw (11), clamping the longitudinal square timbers (2), adjusting the radian of the template, and fastening a template system.

2. The formwork erecting method for the arched concrete beams according to claim 1, wherein in the first step, measuring is performed on site by using a tape measure or a tape measure, and inner-sleeve arched beam positioning lines are placed on the original brick arches (9).

3. The formwork erecting method for the arched concrete beam according to claim 1, wherein in the third step, the positioning screws (11) and the positioning bars (10) are welded to the longitudinal stress bars (7).

4. The formwork erecting method for arched concrete beams according to claim 1, wherein in the fourth step, a butterfly clamp (5) is used to fasten the positioning screw (11).

5. The formwork erecting method for the arched concrete beam according to claim 1, wherein in the fourth step, two longitudinal square timbers (2) are installed side by side at a distance of 300mm from the bottom of the transverse square timbers.

Technical Field

The invention relates to the field of building templates, in particular to a template supporting method for an arched concrete beam.

Background

The inner sleeve arch reinforced masonry arch bridge is characterized in that under the condition that the existing bridge does not interrupt traffic, reinforcement construction is carried out on an arch bottom, the flatness of the arch bottom of the common masonry arch bridge is not enough, the size of the arch is irregular, and the size deviation of the axial line positions of different arches is also inconsistent, when the inner sleeve arch is poured on the arch bottom, a unified specification mold cannot be customized, and if the production period customized one by one according to the size is too long, the cost is high.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a formwork supporting method for an arched concrete beam.

In order to achieve the purpose, the invention adopts the following technical scheme:

a formwork supporting method for an arched concrete beam comprises the following steps:

step one, paying off an original brick arch, and drilling: placing an inner sleeve arch beam positioning line on an original brick arch, drilling a hole on the brick arch, and planting a tie bar;

step two, binding the steel bars of the newly added inner sleeve arch: binding longitudinal stressed steel bars and stirrups of the newly added inner sleeve arched beam according to the position of the inner sleeve arched beam with the positioning line placed in the first step, and binding the stirrups and the tie steel bars at the same time;

step three, positioning steel bar installation: connecting the positioning screw rod and the positioning steel bar with the longitudinal stress steel bar, and fixing the positioning screw rod and the positioning steel bar;

step four, template installation: and (3) configuring a wood template, forming holes in the wood template according to the position of the positioning screw rod in the step three, enabling the positioning screw rod to penetrate through the wood template, installing transverse square timber outside the wood template, after the transverse square timber is installed, installing two longitudinal square timber side by side at a certain distance from the bottom of the transverse square timber, simultaneously fastening the positioning screw rod, clamping the longitudinal square timber, adjusting the radian of the template, and fastening a template system.

Further, in the first step, a measuring tape or a tape measure is adopted on site for measurement, and an inner sleeve arched girder positioning line is placed on the original brick arch.

Furthermore, in the third step, the positioning screw and the positioning steel bar are welded with the longitudinal stress steel bar.

Furthermore, in the fourth step, a butterfly is adopted to clamp the fixed-position screw rod.

And further, in the fourth step, two longitudinal square timbers are arranged side by side at the bottom of the transverse square timbers at intervals of 300 mm.

Compared with the prior art, the formwork supporting method for the arch concrete beam provides the supporting method for the inner sleeve arch formwork of the masonry arch bridge, which has the advantages of simple structure, reasonable design, lower investment cost and direct shaping in field processing, solves the problem of formwork supporting during the construction of the inner sleeve arch in the field, saves the construction cost, shortens the construction period and greatly improves the field construction efficiency.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of a formwork erecting method of an arch-shaped concrete beam according to the present invention;

in the figure, 1-wood template, 2-longitudinal square wood, 3-transverse square wood, 4-tie steel bar, 5-butterfly clip, 6-stirrup, 7-longitudinal stress steel bar, 8-inner sleeve arched beam, 9-original brick arch, 10-positioning steel bar and 11-positioning screw.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1

As shown in fig. 1, a formwork erecting method for an arch concrete beam includes the following steps:

step one, paying off an original brick arch, and drilling: measuring by using a measuring tape or a tape gauge on site, putting an inner sleeve arched beam positioning line on an original brick arch 9, drilling a hole on the brick arch, and planting a tie bar 4;

step two, binding the steel bars of the newly added inner sleeve arch: binding the longitudinal stressed steel bars 7 and the stirrups 6 of the newly added inner sleeve arched beam 8 according to the position of the inner sleeve arched beam 8 with the positioning line placed in the step one, and binding the stirrups 6 and the tie bars 4 at the same time;

step three, positioning steel bar installation: welding the positioning screw rod 11 and the positioning steel bar 10 with the longitudinal stressed steel bar 7, and fixing the positioning screw rod 11 and the positioning steel bar 10, wherein the fixing is mainly used for limiting the thickness of a bottom template protective layer and forming a bottom arch shape;

step four, template installation: and (3) configuring a wood template 1, forming holes in the wood template 1 according to the position of the positioning screw rod 11 in the step three, enabling the positioning screw rod 11 to penetrate through the wood template 1, installing transverse square timbers 3 outside the wood template 1, after the transverse square timbers are installed, installing two longitudinal square timbers 2 side by side at the bottom of the transverse square timbers at intervals of 300mm, simultaneously fastening the positioning screw rod 11 by adopting a butterfly clamp 5, clamping the longitudinal square timbers 2, adjusting the radian of the template, and fastening a template system. The radian of the template is inconsistent with the radian of the arch of the original arch bridge shape and bridges with different spans, and the radian of the template can be confirmed by the consistency of the section size and the design size of the newly added concrete as can be understood by a person skilled in the art.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.