CN103696373B - Construction method for adjustable triangular bracket - Google Patents
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Abstract
本发明公开了一种可调式三角托架的施工方法，首先在墩身施工过程中，预先在托架安装位置留置安装上托板的凹槽及对拉杆，将上托板锚固在墩柱外表面；然后将水平梁的一端与上托板铰接；再将吊杆上端穿过上托板的上预留孔；下端穿过下托板的下预留孔后，上、下两端采用螺母固定，并将吊杆竖直贴靠在墩柱外表面；接着将斜杆的一端与下托板铰接；斜杆的另一端与水平梁远离墩柱外表面的一端铰接，形成稳定的直角三角结构。本发明可通过调整吊杆上、下两端的螺母调节水平梁的水平角度，可将支架整体快速安装、拆卸，适用于悬臂长度在7.5m以内的任何悬臂结构，并且能多次重复利用。
The invention discloses a construction method of an adjustable triangular bracket. Firstly, during the construction process of the pier body, a groove for installing an upper supporting plate and a pair of tie rods are left at the installation position of the bracket in advance, and the upper supporting plate is anchored outside the pier column. surface; then one end of the horizontal beam is hinged to the upper supporting plate; then the upper end of the boom passes through the upper reserved hole of the upper supporting plate; after the lower end passes through the lower reserved hole of the lower supporting plate, nuts are used at the upper and lower ends Fix the suspender vertically against the outer surface of the pier column; then hinge one end of the oblique rod to the lower supporting plate; the other end of the oblique rod is hinged to the end of the horizontal beam away from the outer surface of the pier column to form a stable right-angled triangle structure. The invention can adjust the horizontal angle of the horizontal beam by adjusting the nuts at the upper and lower ends of the suspender, and can quickly install and disassemble the bracket as a whole. It is suitable for any cantilever structure with a cantilever length within 7.5m, and can be reused many times.
Description
技术领域technical field
本发明涉及一种连续梁墩顶现浇块、边跨现浇块及合龙块的悬臂结构临时支架施工技术，具体涉及一种可调式三角托架的施工方法。The invention relates to a construction technology of a temporary support for a cantilever structure of a continuous beam pier top cast-in-place block, side span cast-in-place block and closing dragon block, in particular to a construction method of an adjustable triangular bracket.
背景技术Background technique
目前国内连续梁的墩顶现浇块、边跨现浇块及合龙块等悬臂结构的施工大致有三种方法，分别是：落地支架法、挂篮施工法和微型托架法。但这些结构都不同程度存在各种弊端：落地支架法一次成本投入大；挂篮施工法会引起梁部次应力；普通微型托架法预埋件设置较为复杂，后期处理难度大，且施工局限性较大，大多为一次利用，重复利用率低。At present, there are roughly three methods for the construction of cantilever structures such as pier top cast-in-place blocks, side-span cast-in-place blocks and closing dragon blocks for continuous beams in China, namely: floor support method, hanging basket construction method and micro-bracket method. However, these structures have various disadvantages to varying degrees: the floor support method has a large initial cost investment; the hanging basket construction method will cause secondary stress in the beam; the ordinary micro-bracket method is more complicated to set up the embedded parts, and the post-processing is difficult, and the construction is limited. High reliability, mostly one-time use, low reuse rate.
发明内容Contents of the invention
本发明的目的是提供一种悬臂结构临时支架的施工工艺，可将支架整体快速安装、拆卸，适用于悬臂长度在7.5m以内的任何悬臂结构，并且能多次重复利用。The purpose of the present invention is to provide a construction process for a temporary support of a cantilever structure, which can quickly install and disassemble the whole support, is suitable for any cantilever structure with a cantilever length within 7.5m, and can be reused many times.
为达到以上目的，本发明是采取如下技术方案予以实现的：To achieve the above object, the present invention is achieved by taking the following technical solutions:
一种可调式三角托架的施工方法，其特征在于，包括下述步骤：A construction method of adjustable triangular bracket is characterized in that it comprises the following steps:
（1）墩身施工过程中，预先在托架安装位置留置安装上托板的凹槽及对拉杆，将上托板锚固在墩柱外表面；(1) During the construction of the pier body, the groove and the tie rod for installing the upper supporting plate are left in the bracket installation position in advance, and the upper supporting plate is anchored on the outer surface of the pier column;
（2）将水平梁的一端与上托板铰接；(2) Hinge one end of the horizontal beam to the upper supporting plate;
（3）将吊杆上端穿过上托板的上预留孔；下端穿过下托板的下预留孔后，上、下两端采用螺母固定，并将吊杆竖直贴靠在墩柱外表面；(3) Pass the upper end of the suspender through the upper reserved hole of the upper supporting plate; after passing the lower end through the lower reserved hole of the lower supporting plate, fix the upper and lower ends with nuts, and put the suspender vertically against the pier column outer surface;
（4）将斜杆的一端与下托板铰接；斜杆的另一端与水平梁远离墩柱外表面的一端铰接，形成稳定的直角三角结构；(4) Hinge one end of the oblique rod to the lower supporting plate; hinge the other end of the oblique rod to the end of the horizontal beam away from the outer surface of the pier column to form a stable right-angled triangle structure;
（5）通过调整吊杆上、下两端的螺母调节水平梁的水平角度；(5) Adjust the horizontal angle of the horizontal beam by adjusting the nuts at the upper and lower ends of the boom;
（6）悬臂结构浇注完成后，通过调整吊杆两端的螺母使托架的水平梁离开上方模板，再松开对拉杆即可完成三角托架的拆除。(6) After the pouring of the cantilever structure is completed, adjust the nuts at both ends of the boom to make the horizontal beam of the bracket leave the upper formwork, and then loosen the pair of tie rods to complete the removal of the triangular bracket.
上述方案中，所述斜杆为两个，呈相互平行状与吊杆和水平梁连接。所述的水平梁由两至三个横杆连接而成，横杆间用夹板由螺栓固联。所述的斜杆由底斜杆和顶斜杆连接而成。或者由一个底斜杆、一个顶斜杆、若干个加长杆连接而成。所述底斜杆的一端设置带有销孔的下耳板，通过钢销与下托板连接；顶斜杆的一端设置带有销孔的上耳板，通过钢销与水平梁连接。所述加长杆及底斜杆通过法兰连接；顶斜杆及加长杆通过钢销连接。In the above solution, there are two inclined rods, which are parallel to each other and connected with the suspension rod and the horizontal beam. The horizontal beam is formed by connecting two to three cross bars, and the cross bars are fixedly connected by bolts with splints. The described slanting rod is formed by connecting the bottom slanting rod and the top slanting rod. Or it is formed by connecting a bottom slant bar, a top slant bar, and several extension bars. One end of the bottom inclined rod is provided with a lower ear plate with a pin hole, which is connected with the lower supporting plate through a steel pin; one end of the top inclined rod is provided with an upper ear plate with a pin hole, which is connected with a horizontal beam through a steel pin. The extension bar and the bottom slanting bar are connected by a flange; the top slanting bar and the extension bar are connected by a steel pin.
相比现有技术，本发明具有以下优点：Compared with the prior art, the present invention has the following advantages:
1、能够将三角托架整体快速组装、快速拆卸；1. The triangular bracket can be quickly assembled and disassembled as a whole;
2、除对拉杆预埋孔及上托板凹槽底座外，不需要进行其它预埋件，施工效率及安全性高；2. Except for the pre-embedded hole of the tie rod and the groove base of the upper supporting plate, no other embedded parts are required, and the construction efficiency and safety are high;
3、通过螺母调整下托板上下位置，可调整整个托架水平角度，安装精度较高的同时不需有很高的加工精度；3. Adjust the upper and lower positions of the lower pallet through nuts, and adjust the horizontal angle of the entire bracket. The installation accuracy is high and there is no need for high processing accuracy;
4、所有零件均可集中生产并可多次重复利用，经济性高。4. All parts can be produced centrally and reused many times, with high economy.
附图说明Description of drawings
图1为本发明典型的5m悬臂结构用三角托架的示意图。Fig. 1 is the schematic diagram of the typical 5m cantilever structure triangular bracket of the present invention.
图2为图1三角托架斜杆的部分零件侧视图。其中a图为底斜杆，b图为顶斜杆。Fig. 2 is a partial side view of the inclined rod of the triangular bracket in Fig. 1 . Among them, picture a is the bottom slant bar, and picture b is the top slant bar.
图3为图1三角托架的上、下托板的侧视图。其中a图为上托板，b图为下托板。Fig. 3 is a side view of the upper and lower supporting plates of the triangular bracket in Fig. 1 . Among them, picture a is the upper supporting plate, and picture b is the lower supporting plate.
图4为图1三角托架的安装顺序图。其中，a图为上托板安装；b图为水平梁安装；c图为斜杆及吊杆安装；d图为安装完成状态。Fig. 4 is an installation sequence diagram of the triangular bracket in Fig. 1 . Among them, the picture a shows the installation of the upper pallet; the picture b shows the installation of the horizontal beam; the picture c shows the installation of the inclined rod and the suspender; the picture d shows the installation completion state.
图5为本发明在各种工况下的组装示意图。其中e图为2.5m悬臂结构用三角托架安装图；f图为5m悬臂结构用三角托架安装图；g图为悬臂7.5m悬臂结构用三角托架安装图；h图为用于倾斜墩柱的三角托架安装图；i图为用于倾斜底模的三角托架安装图。Fig. 5 is a schematic diagram of assembly of the present invention under various working conditions. Among them, picture e is the installation drawing of triangular bracket for 2.5m cantilever structure; picture f is the installation drawing of triangular bracket for cantilever structure of 5m; picture g is the installation drawing of triangular bracket for cantilever structure of 7.5m cantilever; picture h is for inclined pier The installation diagram of the triangular bracket of the column; the picture i is the installation diagram of the triangular bracket used for tilting the bottom form.
图1～图4中：1、对拉杆；2、墩柱外表面；3、水平梁；3-1、横杆；3-2、夹板；4、上托板；4-1、上托板销孔；4-2、对拉孔；4-3、上预留孔；5、下托板；5-1、下托板销孔；5-2、下预留孔；6、吊杆；7、斜杆；7-1、底斜杆；7-2、加长杆；7-3、顶斜杆；7-1-1、下耳板；7-3-1、上耳板；8、销孔；9、法兰盘。In Fig. 1 to Fig. 4: 1, tie rod; 2, outer surface of pier column; 3, horizontal beam; 3-1, cross bar; 3-2, splint; 4, upper supporting plate; 4-1, upper supporting plate Pin hole; 4-2, opposite pull hole; 4-3, upper reserved hole; 5, lower supporting plate; 5-1, lower supporting plate pin hole; 5-2, lower reserved hole; 6, suspender; 7, inclined rod; 7-1, bottom inclined rod; 7-2, extension rod; 7-3, top inclined rod; 7-1-1, lower ear plate; 7-3-1, upper ear plate; 8, Pin hole; 9, flange.
具体实施方式Detailed ways
如图1～图3所示，一种可调式三角托架，包括水平梁3、上托板4、下托板5、吊杆6及斜杆7。其中，上托板4通过对拉杆1与墩柱外表面2锚固；水平梁3的一端与上托板4连接，另一端靠里的位置与斜杆7连接。水平梁由两个横杆3-1和夹板3-2组成，横杆3-1间用夹板3-2通过螺栓连接。斜杆7由底斜杆7-1、加长杆7-2和顶斜杆7-3构成，其中底斜杆7-1、加长杆7-2间采用法兰9连接；加长杆7-2和顶斜杆7-3间通过销孔8用钢销连接。底斜杆7-1的一端设置带有销孔的下耳板7-1-1，通过钢销与下托板5连接；顶斜杆7-3的一端设置带有销孔的上耳板7-3-1，通过钢销与水平梁3连接。上托板4、下托板5之间用吊杆6通过螺母连接，通过螺母可调节吊杆的工作长度，以适应托架水平梁的角度变化。整个装置形成稳定的直角三角结构。As shown in FIGS. 1 to 3 , an adjustable triangular bracket includes a horizontal beam 3 , an upper supporting plate 4 , a lower supporting plate 5 , a suspension rod 6 and a diagonal rod 7 . Among them, the upper supporting plate 4 is anchored to the outer surface 2 of the pier column through the tie rod 1; one end of the horizontal beam 3 is connected to the upper supporting plate 4, and the other end is connected to the inclined bar 7 at the inner position. Horizontal beam is made up of two cross bars 3-1 and splint 3-2, and cross bar 3-1 is connected by bolt with splint 3-2. The inclined bar 7 is composed of a bottom inclined bar 7-1, an extension bar 7-2 and a top inclined bar 7-3, wherein the bottom inclined bar 7-1 and the extension bar 7-2 are connected by a flange 9; the extension bar 7-2 Connect with the steel pin by pin hole 8 between the jacking rod 7-3. One end of the bottom inclined rod 7-1 is provided with a lower ear plate 7-1-1 with a pin hole, which is connected with the lower supporting plate 5 through a steel pin; one end of the top inclined rod 7-3 is provided with an upper ear plate with a pin hole 7-3-1, connected with the horizontal beam 3 through steel pins. The upper supporting plate 4 and the lower supporting plate 5 are connected by a nut with a suspender 6, and the working length of the suspender can be adjusted by the nut to adapt to the angle change of the bracket horizontal beam. The whole device forms a stable right triangle structure.
参考图5，2.5m悬臂结构用托架采用6根对拉杆、1个上托板4、1个下托板5、4根吊杆6、1个横杆3-1、1个底斜杆7-1，1个顶斜杆7-3（图5e）；5m悬臂结构用托架采用6根对拉杆、1个上托板4、1个下托板5、4根吊杆6、2个横杆3-1、1个夹板3-2、1个底斜杆7-1，1个加长杆7-2、1个顶斜杆7-3（图5f）；本发明三角托架中斜杆不止一根，如图5g，7.5m悬臂结构用托架采用6根对拉杆、1个上托板4、1个下托板5、2根斜杆7（两个底斜杆，两个顶斜杆，四个加长杆）、3个横杆3-1、2个夹板3-2，这时，上托板及下托板可同时穿过两组吊杆6，以适应该两个斜杆。为适应墩柱及底模的倾斜度，通过调整吊杆6的工作长度以适应托架水平梁的角度变化（图5h、5i）。Referring to Fig. 5, the bracket for the 2.5m cantilever structure adopts 6 tie rods, 1 upper supporting plate 4, 1 lower supporting plate 5, 4 suspension rods 6, 1 horizontal bar 3-1, and 1 bottom inclined bar 7-1, 1 jacking rod 7-3 (Fig. 5e); the bracket for the 5m cantilever structure adopts 6 paired tie rods, 1 upper supporting plate 4, 1 lower supporting plate 5, 4 suspension rods 6, 2 A horizontal bar 3-1, a splint 3-2, a bottom inclined bar 7-1, an extension bar 7-2, and a top inclined bar 7-3 (Fig. 5f); in the triangular bracket of the present invention There is more than one slanting rod, as shown in Figure 5g, the bracket for the 7.5m cantilever structure uses 6 paired tie rods, 1 upper supporting plate 4, 1 lower supporting plate 5, 2 slanting rods 7 (two bottom slanting rods, two a jacking rod, four extension rods), 3 cross bars 3-1, 2 splints 3-2, at this moment, the upper supporting plate and the lower supporting plate can pass through two groups of suspenders 6 at the same time, to adapt to the two a diagonal bar. In order to adapt to the inclination of the pier column and the bottom formwork, the working length of the suspender 6 is adjusted to adapt to the angle change of the horizontal beam of the bracket (Fig. 5h, 5i).
参考图4，一种采用图1典型的5m悬臂结构用三角托架的施工方法，包括下述步骤：With reference to Fig. 4, a kind of construction method that adopts the typical 5m cantilever structure of Fig. 1 to use triangular bracket, comprises the following steps:
（1）上托板安装(1) Upper pallet installation
墩身施工过程中，预先在托架安装位置留置凹槽及对拉杆1，通过上托板4的对拉孔4-2将上托板4锚固在墩柱外表面2（图2a）；During the construction of the pier body, the groove and the tie rod 1 are left in the bracket installation position in advance, and the upper support plate 4 is anchored to the outer surface 2 of the pier column through the pull hole 4-2 of the upper support plate 4 (Fig. 2a);
（2）水平梁安装(2) Horizontal beam installation
将水平梁的两个横杆3-1用夹板3-2连接后，其中一端与上托板4的销孔4-1通过钢销连接（图2b）；After connecting the two crossbars 3-1 of the horizontal beam with the splint 3-2, one end is connected with the pin hole 4-1 of the upper supporting plate 4 through a steel pin (Fig. 2b);
（3）吊杆及下托板安装(3) Boom and lower support plate installation
将吊杆6（精轧螺纹钢）上端穿过上托板4的上预留孔4-3；下端穿过下托板5的下预留孔5-2后，采用螺母固定（图3）；Put the upper end of the suspender 6 (finish-rolled rebar) through the upper reserved hole 4-3 of the upper supporting plate 4; after the lower end passes through the lower reserved hole 5-2 of the lower supporting plate 5, fix it with nuts (Figure 3) ;
（4）斜杆安装(4) Diagonal rod installation
将底斜杆7-1与加长杆7-2用法兰9连接，并通过钢销将加长杆7-2与底斜杆连接，将底斜杆的耳板7-1-1与下托板5（销孔5-1）通过钢销连接；顶斜杆7-3的上耳板7-3-1通过钢销与水平梁3远离墩柱外表面的一端连接（图3）；通过调整吊杆6螺母调节托架水平角度（图5h、图5i）；Connect the bottom slanting rod 7-1 and the extension rod 7-2 with the flange 9, and connect the extension rod 7-2 to the bottom slanting rod through steel pins, and connect the ear plate 7-1-1 of the bottom slanting rod to the lower supporting plate 5 (pin hole 5-1) is connected by a steel pin; the upper ear plate 7-3-1 of the jacking rod 7-3 is connected with the end of the horizontal beam 3 away from the outer surface of the pier column by a steel pin (Fig. 3); by adjusting Boom 6 nuts adjust the horizontal angle of the bracket (Figure 5h, Figure 5i);
（5）托架拆除(5) Bracket removal
通过调整吊杆6螺母使托架的水平梁3离开上方模板，再松开对拉杆1即可完成托架拆除。By adjusting the suspender 6 nuts, the horizontal beam 3 of the bracket is separated from the upper template, and then the pair of tie rods 1 is loosened to complete the removal of the bracket.
Claims (7)
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| CN112943092B (en) * | 2021-03-31 | 2024-07-02 | 江苏谷登重型机械科技股份有限公司 | Split type construction supporting mechanism of horizontal directional drilling machine |
| CN113622322A (en) * | 2021-08-13 | 2021-11-09 | 中铁十五局集团有限公司 | Device and method for replacing and maintaining bridge support |
| CN114753255A (en) * | 2022-03-16 | 2022-07-15 | 中交二公局第三工程有限公司 | Adjustable assembled 0# piece bracket structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2444449C (en) * | 2003-10-07 | 2013-07-09 | George W. Jackson | Bridge overhang bracket |
| JP4569878B2 (en) * | 2006-08-07 | 2010-10-27 | 清水建設株式会社 | Bridge girder construction method |
| CN201460205U (en) * | 2009-05-27 | 2010-05-12 | 中冶实久建设有限公司 | Wide-span reinforced concrete combined beam flange cantilever support |
| CN201567533U (en) * | 2009-09-28 | 2010-09-01 | 中交二公局第六工程有限公司 | Assembly and disassembly-type bracket for cast-in-place of continuous beam |
| CN202148494U (en) * | 2011-07-19 | 2012-02-22 | 青岛德顺昕工贸有限公司 | Formwork support for bridge |
| CN102704409A (en) * | 2012-06-28 | 2012-10-03 | 中铁十三局集团第一工程有限公司 | Shelf bracket |
| CN202881854U (en) * | 2012-10-15 | 2013-04-17 | 中交四航局第二工程有限公司 | Support bracket for bridge construction |
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| CN103696373A (en) | 2014-04-02 |
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