WO2022142193A1 - 大跨度薄壁混凝土声屏障浇筑台车的施工方法 - Google Patents

大跨度薄壁混凝土声屏障浇筑台车的施工方法 Download PDF

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Publication number
WO2022142193A1
WO2022142193A1 PCT/CN2021/102140 CN2021102140W WO2022142193A1 WO 2022142193 A1 WO2022142193 A1 WO 2022142193A1 CN 2021102140 W CN2021102140 W CN 2021102140W WO 2022142193 A1 WO2022142193 A1 WO 2022142193A1
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WIPO (PCT)
Prior art keywords
arch
sound barrier
construction method
jack
span thin
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PCT/CN2021/102140
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English (en)
French (fr)
Inventor
任小森
孙爱田
于广涛
毕宗伟
赵杨
张春
刘林
王琨
王志宇
符强
Original Assignee
中铁六局集团北京铁路建设有限公司
中铁六局集团有限公司
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Application filed by 中铁六局集团北京铁路建设有限公司, 中铁六局集团有限公司 filed Critical 中铁六局集团北京铁路建设有限公司
Priority to DE212021000393.1U priority Critical patent/DE212021000393U1/de
Publication of WO2022142193A1 publication Critical patent/WO2022142193A1/zh
Priority to ZA2023/06668A priority patent/ZA202306668B/en

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0047Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F8/00Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0023Details, e.g. foundations

Definitions

  • the application relates to the field of trolleys, in particular to a construction method for a large-span thin-walled concrete sound barrier pouring trolley.
  • the sound barrier is a wall-type structure installed on the side of railways and highways to reduce the impact of traffic noise on nearby residents.
  • the sound barrier includes a foundation, multiple main beams set on the foundation, and secondary beams connected between the main beams.
  • the primary and secondary beams of the sound barrier are generally reinforced concrete structures, and formwork needs to be erected during construction.
  • scaffolding is generally erected under the construction primary and secondary beams as a support to support the installation of the formwork for the primary and secondary beams.
  • sound barriers are generally installed next to existing railways or highways, and the scaffolding will occupy the railway or highway space and affect normal traffic.
  • the inventor believes that there is a technical problem that the current construction of the primary and secondary beams of the sound barrier will affect normal traffic.
  • the present application provides a construction method of a large-span thin-walled concrete sound barrier pouring trolley.
  • the construction method of the large-span thin-walled concrete sound barrier pouring trolley provided by the application adopts the following technical scheme:
  • the construction method of the large-span thin-walled concrete sound barrier pouring trolley includes the following steps:
  • Step 1 Build the foundation on both sides of the existing line, and install the rails on the foundation;
  • Step 2 Hoist the pre-assembled walking system, adjust the position of the connecting beam, make the walking wheel fit with the rail, then adjust the jack, support one end of the jack on the foundation, make the walking wheel detach from the rail, and support the connecting beam;
  • Step 3 Installation of truss system: transport the finished arch to the construction site, hoist the arch, connect the column and the connecting beam, adjust the jack and oil cylinder, adjust the arch and the turning section to the design elevation, repeat the above process, The subsequent arch installations are performed in sequence, and after the installation and adjustment of the arches are completed, connecting rods are connected between adjacent arches;
  • Step 4 Install the bottom form on the top arch, tie the steel bars, install the side formwork, concrete pouring and maintenance, after reaching the concrete design strength, reduce the height of the arch through the jack and the oil cylinder, remove the bottom form, and then continue to adjust the jack. height, so that the walking wheel contacts the rail and moves the trolley.
  • the present application combines the truss system with the walking system to form a formwork support trolley.
  • the height of the arch frame can be adjusted through the lifting assembly, so that the arch frame and the turning section can support the bottom formwork. Move the trolley after completion;
  • each arch frame is divided into two sections, the two sections of the arch frame are bolted, and one section of the arch frame is hoisted first. After the installation is completed, the other section of the arch frame is hoisted, and the connection of the two sections of the arch frame is completed.
  • the sound barrier is located within the gantry.
  • parts such as connecting rods and pedals are hoisted by the hoisting equipment on the gantry; at the same time, the formwork can be hoisted when the formwork is installed, which is convenient for construction.
  • arch processing connect the beam under the top arch, and the two ends of the beam are respectively connected and fixed with the top arch; between the top arch and the beam, the vertical rod and the inclined rod are fixed in sequence, and the vertical column and the beam or the top arch are fixed. Connect, then connect the diagonal braces between the columns and beams.
  • the arch frame is processed in advance and can be directly hoisted during construction, thereby reducing the risk of high-altitude operations.
  • the traveling system includes a connecting beam, traveling wheels and a jack installed at the bottom of the connecting beam.
  • the lifting of the arch frame and the installation and removal of the bottom mold are controlled by the jack, and the movement of the arch frame is controlled by the traveling wheel, so the operation is more convenient.
  • a drive motor is installed on the connecting beam, and the drive motor is connected to the traveling wheel in a transmission manner.
  • a pedal is laid on the connecting rod.
  • the pedals are covered on the connecting rod to form a work platform that can be used by people, and the construction personnel can stand on the work platform to perform concrete pouring work, which is convenient for construction and has better safety.
  • the truss system includes an arch, connecting components connecting adjacent arches, and flipping sections hinged at both ends of the arch, at least two uprights are fixed at the bottom of the arch, and the one between the uprights and the flipping section is An oil cylinder is connected between.
  • the arch frame includes a top arch, a beam disposed below the top arch and fixedly connected to the top arch at both ends, and vertical rods and inclined rods fixed between the top arch and the cross beam. The ends are respectively hinged with the flipping segment.
  • the present application includes at least one of the following beneficial technical effects:
  • the truss system and the walking system are combined to form a formwork support trolley.
  • the height of the arch frame can be adjusted through the lifting assembly, so that the arch frame and the flipping section can support the bottom form, and the walking wheel is used to facilitate moving the platform after the construction is completed. car;
  • the occupied area of the arch is reduced, which is convenient for the transportation and hoisting of the arch; on the other hand, the weight of the arch is reduced, so that the crane can meet the lifting work of the arch.
  • FIG. 1 is a front view of the trolley.
  • Figure 2 is a partial side view of the dolly.
  • the embodiment of the present application discloses a construction method for a large-span thin-walled concrete sound barrier pouring trolley, which includes the following steps: with reference to FIG. 1 and FIG. 2 ,
  • Step 1 Construct foundation 9 on both sides of the existing road or railway; the foundation 9 is a concrete strip foundation 9 and is laid along the length of the existing road.
  • the steel rails 91 are embedded in the foundation 9, and the distance between the adjacent steel rails 91 is the same as the distance between the adjacent columns 3 on the trolley.
  • the steel rails 91 protrude from the top surface of the foundation 9 and serve as the walking track.
  • Step 2 Install the traveling system on the foundation 9.
  • the traveling system is finished in advance and is hoisted to the foundation 9 on site. It includes the connecting beam 4, the traveling wheel 7 and the jack 83 installed at the bottom of the connecting beam 4.
  • the traveling wheel 7 is divided into The driving wheel and the passive wheel are alternately distributed, and the driving wheel is connected with a driving motor, and the driving motor can be installed on the connecting beam 4 .
  • Each of the traveling wheels 7 and the two jacks 83 is a group of traveling systems, and the traveling wheels 7 of each group of traveling systems are located between the two jacks 83 .
  • Two mounting plates 82 are installed at the bottom of the connecting beam 4 , and connecting plates 81 are fixed on both sides of the connecting beam 4 , and the connecting plates 81 are bolted to the mounting plate 82 .
  • An installation space for installing the jack 83 is formed between the two mounting plates 82 .
  • the jack 83 is located between the two mounting plates 82 , and one end is connected to the bottom of the connecting beam 4 , and the other end is used to support the foundation 9 .
  • the connecting plate 81 , the mounting plate 82 and the jack 83 constitute a lifting assembly 8 , and the lifting assembly 8 can adjust the height of the arch 1 .
  • the installation steps are as follows: hoist the assembled traveling system, adjust the position of the connecting beam 4, so that the traveling wheel 7 cooperates with the rail 91; then adjust the jack 83, and support one end of the jack 83 on the foundation 9, so that the traveling wheel 7 is separated from the rail 91 , and support the connecting beam 4.
  • Step 3 hoisting the truss system: the truss system includes an arch 1, a connecting component 5 connecting adjacent arches 1, and a turning section 2 hinged at both ends of the arch 1; the arches 1 are evenly spaced and multiple arches are arranged.
  • the frame 1 is located on the same axis, and at least two uprights 3 are fixed at the bottom of the arch frame 1.
  • the number of the uprights 3 can be determined according to the span of the arch frame 1 and the spacing between the adjacent uprights 3.
  • the three uprights 3 are As an example, a space through which an existing road passes is formed between adjacent pillars 3 .
  • An oil cylinder 62 is provided between the upright column 3 and the inversion section 2 for supporting the inversion section 2 .
  • the arch 1 includes an arc-shaped top arch 11, a cross beam 12 arranged below the top arch 11 and fixedly connected to the top arch 11 at both ends, and a vertical rod 13 and an oblique rod 14 fixed between the top arch 11 and the cross beam 12,
  • the vertical rods 13 and the inclined rods 14 are alternately distributed, and the plurality of vertical rods 13 are evenly arranged at intervals, and the plurality of inclined rods 14 are arranged in a wave shape. support bottom mold.
  • the upright column 3 is fixedly connected with the top arch 11 or the beam 12 .
  • the turning section 2 is hinged with the top arch 11, and the materials and specifications of the two are the same.
  • Scissor diagonal braces 15 are fixedly connected between adjacent columns 3 of different arches 1 in the same row, which increases the integrity and support stability of the truss system.
  • a diagonal brace 16 is connected between the column 3 and the beam 12, one end of the diagonal brace 16 is fixedly connected to the column 3, and the other end is fixedly connected to the beam 12, wherein a column 3 at both ends of the arch 1 and the beam 12 are provided with a Diagonal braces 16, two diagonal braces 16 are arranged between the column 3 and the beam 12 in the middle, and the two diagonal braces 16 are symmetrically installed on both sides of the vertical column 3, and the diagonal braces 16 are used to increase the connection between the vertical column 3 and the arch 1 strength and support.
  • the connecting assembly 5 includes a connecting rod, which can be made of channel steel.
  • the connecting rod is detachably connected between the adjacent top arches 11 and between the adjacent turning sections 2, wherein the detachable connection is a bolt connection, and the connecting rod is connected along the
  • the radian directions of the top arch 11 and the overturning section 2 are evenly spaced, and a pedal is laid on the connecting rod.
  • the pedal is in an arc shape consistent with the radian of the top arch 11.
  • the pedal closes the gap between the adjacent top arches 11, which is a sound barrier.
  • the pouring provides a working platform for the master.
  • the arch frame 1 After the arch frame 1 is processed, it is transported to the construction site, the arch frame 1 is hoisted, the column 3 and the connecting beam 4 are bolted and fixed, the jack 83 and the oil cylinder 62 are adjusted, and the arch frame 1 and the turning section 2 are adjusted to the design elevation. Repeat the above process, and install the subsequent arches 1 in sequence. After the installation and adjustment of the arches 1 is completed, install the scissors diagonal braces 15 between the adjacent columns 3, connect the multiple arches 1 as a whole, connect the connecting rods between the adjacent arches 1, and lay on the connecting rods pedals to form a construction platform.
  • Step 4 Install the formwork, fix and install the bottom form of the main beam of the sound barrier on the top arch 11, bind the steel bars of the main beam, install the side form, and perform concrete pouring.
  • the side formwork is removed first, and the concrete curing liquid is applied for curing.
  • the height of the arch frame 1 is lowered by the jack 83 and the oil cylinder 62, and the bottom formwork is removed. Then continue to lower the height of the jack 83, so that the traveling wheel 7 contacts the rail 91, and the trolley is driven to move to the next construction position by the driving motor.
  • each arch frame 1 is divided into two sections, and the two sections of the arch frame 1 are bolted together. During construction, one section is hoisted first, and after the installation is completed, another section is hoisted, and the connection and fixing of the two sections are completed.
  • the arch frame 1 By arranging the arch frame 1 into two sections, on the one hand, the occupied area of the arch frame 1 is reduced, which is convenient for transportation and hoisting of the arch frame 1; Work.
  • a gantry frame is set on the outside of the sound barrier.
  • the sound barrier is located in the gantry frame, and parts such as connecting rods and pedals are hoisted by the hoisting equipment on the gantry frame; When the template is hoisted, it is convenient for construction.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
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  • Bridges Or Land Bridges (AREA)
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Abstract

一种大跨度薄壁混凝土声屏障浇筑台车的施工方法,包括以下步骤:步骤1:在既有线路两侧施工基础(9),并在基础(9)上安装钢轨(91);步骤2:吊装预先拼装好的行走系统;步骤3:桁架系统安装:将加工完成的拱架(1)运输至施工现场,吊装拱架(1),并将立柱(3)和连接梁(4)连接;调整千斤顶(83)和油缸(62),将拱架(1)和翻转段(2)调整至设计标高,依次进行后续拱架(1)安装,在拱架(1)安装调整完成后,在相邻拱架(1)之间连接连接杆;步骤4:在顶拱(11)上安装底模,绑扎钢筋、安装侧模,进行混凝土浇筑,待达到混凝土设计强度后,通过千斤顶(83)和油缸(62)降低拱架的高度,拆除底模,然后调整千斤顶(83)的高度,使行走轮(7)接触钢轨(91),移动台车。该方法具有便于移动和施工,在满足施工的同时,不影响既有线路的通行。

Description

大跨度薄壁混凝土声屏障浇筑台车的施工方法 技术领域
本申请涉及台车的领域,尤其是涉及一种大跨度薄壁混凝土声屏障浇筑台车的施工方法。
背景技术
声屏障是为减轻行车噪声对附近居民的影响而设置在铁路和公路侧旁的墙式构造物。
声屏障包括基础、设置在基础上的多条主梁以及连接在主梁之间的次梁,声屏障的主次梁一般为钢筋混凝土结构,在施工时需要架立模板。目前,一般是在施工主次梁下方搭设满堂脚手架作为支撑,用于支撑主次梁的模板安装。然而声屏障一般安装在既有铁路或者公路旁,满堂脚手架会占据铁路或者公路空间,影响正常交通。
针对上述中的相关技术,发明人认为存在有目前声屏障主次梁施工,会影响正常交通的技术问题。
发明内容
为了改善声屏障施工影响既有线正常交通的技术问题,本申请提供一种大跨度薄壁混凝土声屏障浇筑台车的施工方法。
本申请提供的大跨度薄壁混凝土声屏障浇筑台车的施工方法,采用如下的技术方案:
大跨度薄壁混凝土声屏障浇筑台车的施工方法,包括以下步骤:
步骤1:在既有线路两侧施工基础,并在基础上安装钢轨;
步骤2:吊装预先拼装好的行走系统,调整连接梁的位置,使行走轮与钢轨配合,然后调整千斤顶,将千斤顶的一端支撑在基础上,使行走轮脱离钢轨,并将连接梁撑起;
步骤3:桁架系统安装:将加工完成的拱架运输至施工现场,吊装拱架,并将立柱和连接梁连接,调整千斤顶和油缸,将拱架和翻转段调整至设计标高,重复上述过程,依次进行后续拱架安装,在拱架安装调整完成后,在相邻拱架之间连接连接杆;
步骤4:在顶拱上安装底模,绑扎钢筋、安装侧模,进行混凝土浇筑,养护,待达到混凝土设计强度后,通过千斤顶和油缸降低拱架的高度,拆除底模,然后继续调整千斤顶的高度,使行走轮接触钢轨,移动台车。
通过采用上述技术方案,本申请将桁架系统与行走系统结合形成模板支撑台车,通 过升降组件能够调整拱架的高度,使拱架和翻转段对底模进行支撑,通过行走轮,便于在施工完成之后移动台车;
并且在相邻立柱之间形成供既有道路通过的空间,使台车作为既有线防护棚架及现浇混凝土底模受力架体。
可选的,将每榀拱架分为两段,两段拱架栓接,先吊装其中一段拱架,安装完成后,在吊装另一段拱架,并完成两段拱架的连接。
通过采用上述技术方案,通过将拱架设置为两段,一方面减小了拱架的占用面积,便于拱架运输和吊装;另一方面减少了拱架的重量,使吊车能够满足拱架的吊装工作。
可选的,声屏障位于龙门架内。
通过采用上述技术方案,通过龙门架上的吊装设备对连接杆和踏板等零件进行吊装;同时还能在安装模板时,进行模板吊装,便于施工。
可选的,拱架加工:在顶拱下方连接横梁,横梁的两端分别与顶拱连接固定;在顶拱和横梁之间依次固定连接立杆和斜杆,将立柱和横梁或者顶拱固定连接,然后连接立柱和横梁之间的斜撑。
通过采用上述技术方案,预先将拱架加工完成,施工时直接吊装即可,减少高空作业的危险性。
可选的,行走系统包括连接梁、安装在连接梁底部的行走轮和千斤顶。
通过采用上述技术方案,通过千斤顶控制拱架的升降以及底模的安装和拆除,通过行走轮控制拱架的移动,操作更加方便。
可选的,在连接梁上安装驱动电机,驱动电机与行走轮传动连接。
通过采用上述技术方案,利用驱动电机带动拱架进行移动,更加便利。
可选的,在连接杆安装完成后,在连接杆上铺设踏板。
通过采用上述技术方案,踏板覆盖在连接杆上形成可上人的工作平台,施工人员能够站在工作平台上进行混凝土浇筑工作,方便施工,安全性更好。
可选的,所述桁架系统包括拱架、连接相邻拱架的连接组件以及分别铰接在拱架两端的翻转段,所述拱架底部至少固定有两根立柱,所述立柱和翻转段之间连接有油缸。
可选的,所述拱架包括顶拱、设置在顶拱下方且两端分别与顶拱固定连接的横梁以及固设在顶拱与横梁之间的立杆和斜杆,所述顶拱两端分别与翻转段铰接。
综上所述,本申请包括以下至少一种有益技术效果:
1.本申请将桁架系统与行走系统结合形成模板支撑台车,通过升降组件能够调整拱架的高 度,使拱架和翻转段对底模进行支撑,通过行走轮,便于在施工完成之后移动台车;
并且在相邻立柱之间形成供既有道路通过的空间,使台车作为既有线防护棚架及现浇混凝土底模受力架体;
2.通过在拱架之间设置踏板,形成工作平台,便于上人施工;
3.通过将拱架设置为两段,一方面减小了拱架的占用面积,便于拱架运输和吊装;另一方面减少了拱架的重量,使吊车能够满足拱架的吊装工作。
附图说明
图1是台车的正视图。
图2是台车的部分侧视图。
附图标记说明:1、拱架;11、顶拱;12、横梁;13、立杆;14、斜杆;15、剪刀斜撑;16、斜撑;2、翻转段;3、立柱;4、连接梁;5、连接组件;6、支撑组件;61、水平梁;62、油缸;7、行走轮;8、升降组件;81、连接板;82、安装板;83、千斤顶;9、基础;91、钢轨。
具体实施方式
以下结合附图1-2对本申请作进一步详细说明。
本申请实施例公开一种大跨度薄壁混凝土声屏障浇筑台车的施工方法,包括以下步骤:结合图1和图2,
步骤1:在既有道路或者铁路两侧施工基础9;基础9为混凝土条形基础9,且沿着既有道路长度方向铺设。在浇筑基础9混凝土时,在基础9内预埋钢轨91,相邻钢轨91之间的间距与台车上相邻立柱3之间的间距相同,钢轨91突出基础9顶面,作为台车的行走轨道。
步骤2:在基础9上安装行走系统,行走系统为提前加工完成,现场吊装至基础9上,其包括连接梁4、安装在连接梁4底部的行走轮7和千斤顶83,行走轮7分为主动轮和被动轮,主动轮和被动轮交替分布,主动轮传动连接有驱动电机,驱动电机可以安装在连接梁4上。其中每个行走轮7与两个千斤顶83为一组行走系统,每组行走系统的行走轮7位于两个千斤顶83之间。连接梁4的底部安装两道安装板82,连接梁4的两侧固定有连接板81,连接板81与安装板82螺栓连接。两道安装板82之间形成用于安装千斤顶83的安装空间,千斤顶83位于两安装板82之间并一端与连接梁4底部连接,另一端用于支撑在基础9上。连接板81、安装板82和千斤顶83组成升降组件8,升降组件8能够调整拱架1的高度。安装步骤如下:吊装拼装好的行走系统,调整连接梁4的位置,使行走轮7与钢轨91配合;然后调整千斤顶83,将千斤顶83的一端支撑在基础9上,使行走轮7脱离钢轨91, 并将连接梁4撑起。
步骤3:吊装桁架系统:桁架系统包括拱架1、连接相邻拱架1的连接组件5以及分别铰接在拱架1两端的翻转段2;拱架1间隔均匀设置多个,且多个拱架1位于同一轴线上,拱架1的底部至少固定有两根立柱3,立柱3的根数可以根据拱架1的跨度和相邻立柱3之间的间距确定,本申请以三根立柱3为例进行说明,相邻立柱3之间形成既有道路通过的空间。立柱3和翻转段2之间设有用于对翻转段2进行支撑的油缸62,油缸62的一端与立柱3铰接,另一端与翻转段2铰接。
拱架1包括弧形顶拱11、设置在顶拱11下方且两端分别与顶拱11固定连接的横梁12以及固设在顶拱11与横梁12之间的立杆13和斜杆14,立杆13和斜杆14交替分布,且多根立杆13间隔均匀布置,多根斜杆14呈波浪状布置,立杆13和斜杆14用于增加拱架1的结构强度,使其能够稳定的支撑底模。立柱3与顶拱11或者横梁12固定连接。翻转段2与顶拱11铰接,且两者的材质和规格一致。不同拱架1位于同一列的相邻立柱3之间固定连接有剪刀斜撑15,增加桁架系统的整体性以及支撑稳定性。
立柱3和横梁12之间连接有斜撑16,斜撑16一端固定连接在立柱3上,另一端固定连接在横梁12上,其中位于拱架1两端的立柱3与横梁12之间设有一道斜撑16,位于中间的立柱3和横梁12之间设有两道斜撑16,并且两道斜撑16对称安装在立柱3的两侧,利用斜撑16增加立柱3和拱架1的连接强度以及支撑性能。
连接组件5包括连接杆,连接杆可以为槽钢制成,连接杆可拆卸连接在相邻顶拱11之间和相邻翻转段2之间,其中可拆卸连接为螺栓连接,连接杆沿着顶拱11和翻转段2的弧度方向间隔均匀分布,在连接杆上铺设有踏板,踏板为与顶拱11弧度一致的弧形,踏板将相邻顶拱11之间的空隙封闭,为声屏障浇筑提供上人工作平台。
安装步骤如下:
加工:在顶拱11下方连接横梁12,横梁12的两端分别与顶拱11焊接固定;然后在顶拱11和横梁12之间依次固定连接立杆13和斜杆14;在横梁12和顶拱11上放线定位出立柱3的安装位置,将立柱3和横梁12或者顶拱11栓接或者焊接,然后连接立柱3和横梁12之间的斜撑16。完成后,安装与顶拱11铰接的翻转段2,并在翻转段2和立柱3之间连接油缸62。
拱架1加工完成后,运输至施工现场,吊装拱架1,并将立柱3和连接梁4栓接固定,调整千斤顶83和油缸62,将拱架1和翻转段2调整至设计标高。重复上述过程,依次后续拱架1安装。在拱架1安装调整完成后,在相邻立柱3之间安装剪刀斜撑15,将多个 拱架1连接为整体,在相邻拱架1之间连接连接杆,并在连接杆上铺设踏板,形成施工平台。
步骤4:安装模板,将声屏障的主梁的底模固定安装在顶拱11上,绑扎主梁钢筋,安装侧模,进行混凝土浇筑。待混凝土初凝之后,先拆除侧模,并涂刷混凝土养护液进行养护,待养护至混凝土达到设计强度之后,通过千斤顶83和油缸62降低拱架1的高度,拆除底模。然后继续降低千斤顶83的高度,使行走轮7接触钢轨91,通过驱动电机带动台车移动至下一施工位置。
当拱架1的跨度较大时,其运输和吊装对施工空间和吊车的规格要求很高,现场难以进行施工,因此将每榀拱架1分为两段,两段拱架1栓接,施工时,先吊装一段,安装完成后,再吊装另一段,并完成两段连接固定。通过将拱架1设置为两段,一方面减小了拱架1的占用面积,便于拱架1运输和吊装;另一方面减少了拱架1的重量,使吊车能够满足拱架1的吊装工作。
进一步的,为了便于台车安装和模板安装,在声屏障外侧设置龙门架,声屏障位于龙门架内,通过龙门架上的吊装设备对连接杆和踏板等零件进行吊装;同时还能在安装模板时,进行模板吊装,便于施工。
以上均为本申请的较佳实施例,并非依此限制本申请的保护范围,故:凡依本申请的结构、形状、原理所做的等效变化,均应涵盖于本申请的保护范围之内。

Claims (9)

  1. 大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于,包括以下步骤:
    步骤1:在既有线路两侧施工基础(9),并在基础(9)上安装钢轨(91);
    步骤2:吊装预先拼装好的行走系统,调整连接梁(4)的位置,使行走轮(7)与钢轨(91)配合,然后调整千斤顶(83),将千斤顶(83)的一端支撑在基础(9)上,使行走轮(7)脱离钢轨(91),并将连接梁(4)撑起;
    步骤3:桁架系统安装:将加工完成的拱架(1)运输至施工现场,吊装拱架(1),并将立柱(3)和连接梁(4)连接,相邻立柱(3)之间形成既有线路空间;调整千斤顶(83)和油缸(62),将拱架(1)和翻转段(2)调整至设计标高,重复上述过程,依次进行后续拱架(1)安装,在拱架(1)安装调整完成后,在相邻拱架(1)之间连接连接杆;
    步骤4:在顶拱(11)上安装底模,绑扎钢筋、安装侧模,进行混凝土浇筑,养护,待达到混凝土设计强度后,通过千斤顶(83)和油缸(62)降低拱架(1)的高度,拆除底模,然后继续调整千斤顶(83)的高度,使行走轮(7)接触钢轨(91),移动台车。
  2. 根据权利要求1所述的大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于:将每榀拱架(1)分为两段,两段拱架(1)栓接,先吊装其中一段拱架(1),安装完成后,在吊装另一段拱架(1),并完成两段拱架(1)的连接。
  3. 根据权利要求1所述的大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于:声屏障位于龙门架内。
  4. 根据权利要求1所述的大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于:拱架(1)加工:在顶拱(11)下方连接横梁(12),横梁(12)的两端分别与顶拱(11)连接固定;在顶拱(11)和横梁(12)之间依次固定连接立杆(13)和斜杆(14),将立柱(3)和横梁(12)或者顶拱(11)固定连接,然后连接立柱(3)和横梁(12)之间的斜撑(16)。
  5. 根据权利要求1所述的大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于:行走系统包括连接梁(4)、安装在连接梁(4)底部的行走轮(7)和千斤顶(83)。
  6. 根据权利要求5所述的大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于:在连接梁(4)上安装驱动电机,驱动电机与行走轮(7)传动连接。
  7. 根据权利要求1所述的大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于:在连接杆安装完成后,在连接杆上铺设踏板。
  8. 根据权利要求1所述的大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于:所述桁架系统包括拱架(1)、连接相邻拱架(1)的连接组件(5)以及分别铰接在拱架(1)两端的翻转段(2),所述拱架(1)底部至少固定有两根立柱(3),所述立柱(3)和翻转段(2)之间连接有油缸 (62)。
  9. 根据权利要求8所述的大跨度薄壁混凝土声屏障浇筑台车的施工方法,其特征在于:所述拱架(1)包括顶拱(11)、设置在顶拱(11)下方且两端分别与顶拱(11)固定连接的横梁(12)以及固设在顶拱(11)与横梁(12)之间的立杆(13)和斜杆(14),所述顶拱(11)两端分别与翻转段(2)铰接。
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