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Slipform construction method of road edge stone

1 前言

1 Preface

随着我国高等级公路的飞速发展，全面推行机械化施工，是大势所趋，这对于提高施工质量，加快施工进度有着重要作用。预制法路缘石施工主要是把预制好的路缘石砌在路肩预挖的沟槽中。施工进度慢、工序多、占用场地大，路缘石的整体强度差、线条不顺畅。滑模施工法是采用路缘石滑模机在施工现场将新拌路缘石材料连续现浇．并密实成型．每天可铺筑1500m左右。滑模法铺筑路缘石速度快、所需人工少、不需要预制场地，铺筑的路缘石整体结构强度高、线型顺畅美观，倍受施工单位和业主的青睐。

With the rapid development of high grade highway in our country, it is the general trend to carry out mechanized construction in an all-round way, which plays an important role in improving the quality of construction and speeding up the construction progress. Prefabricated road curb construction is mainly made of precast curb stone in the trench excavated on the shoulder. The construction progress is slow, the process is much, the occupying site is large, the overall strength of the curb is poor, and the lines are not smooth. The slipform construction method is to use the slippery stone slipform machine to continuously pour the new curb stone material at the construction site, and to form it densely. It can lay 1500m every day. The sliding mode method has the advantages of fast speed, less manpower and no need for precast sites. The overall structure of the paved road stone is of high strength and smooth and beautiful line type. It is favored by the construction units and the owners.

2 工法特点

2 characteristics of industrial law

与先预制后安装方法相比，本工法能够提高路缘石内在的施工质量：路缘石强度高、平整度好、线形顺直、美观大方、整体稳定性好。同时加快施工进度缩短了工期，节省人力物力，能节约20-30%的成本。 节约能源消耗，经济效益也不错。

Compared with the prefabricated installation method, this method can improve the internal construction quality of the road edge stone: high strength, good smoothness, straight line, beautiful appearance and good overall stability. At the same time, speeding up the construction process shortens the construction period, saves manpower and material resources, and saves the cost of 20-30%. Energy consumption is saved and economic benefits are good.

3 适用范围

3 scope of application

本工法适用于各等级公路路缘石施工。

This construction method is suitable for the construction of various grades of highway curb stone.

4 工作原理

4 working principle

根据工作原理的不同，路缘石滑模机主要分为挤压式、振捣式、锤捣式和振动式。

According to the different working principles, the sliver slipform machine is mainly divided into extruding, vibrating, hammering and vibrating.

挤压式路缘石自动成型机的工作原理是：混合料被螺旋推进器或往复缸不断地推入成型模具，并充分地挤满，混合料内部产生一定的挤压力。形成具有一定密实度、强度及一定形状的路缘石。在路缘石形成的过程中，混合料对螺旋输送器的水平反力传给机架、行走轮，使整机沿路面前进。

The working principle of the extruded edge stone automatic molding machine is that the mixture is continuously pushed into the molding mold by the spiral thruster or reciprocating cylinder, and it is fully packed, and a certain extrusion pressure is produced inside the mixture. The formation of a certain degree of compaction, strength and certain shape of the curb. In the process of forming the curb, the horizontal reaction force of the mixture to the screw conveyor is transmitted to the frame and the walking wheel to make the whole machine move along the road surface.

锤捣式路缘石滑模机的工作原理是：在滑模机成型模具的前面安装有锤捣装置，该系统将混凝土锤捣挤压进入与主机相连的成型模具里；机器的行走是靠自撞锤运动的反作用力。

The working principle of the hammer sliding pattern machine is that a hammer device is installed in front of the molding die of the sliding mode machine. The system makes the concrete hammer pressed into the molding die connected with the main engine; the machine is walking by the counterforce of the movement of the crash hammer.

振捣式路缘石滑模机的工作原理是：在滑模机成型模具的前面加有振捣棒，通过振捣棒的作用使水泥混凝土达到一定的密实度。

The working principle of the vibrating roller sliding mode machine is that the vibrating rod is added to the front of the molding die of the sliding mode machine, and the cement concrete is compacted to a certain degree by the action of the vibrator.

振动式路缘石滑模机的工作原理是：在模具上安装一个高频低幅的振动器，通过振动器使水泥混凝土达到一定的密实度；机器的行走是靠本身的动力，而不依赖混合料对机器的反作用力，因而行走较稳定。

The working principle of the vibrating roller sliver is that a high frequency and low amplitude vibrator is installed on the mold to make the cement concrete to a certain degree of compaction through the vibrator; the machine walking depends on its own power without relying on the reaction force of the mixture to the machine, so it is more stable.

各种路缘石滑模机的工作原理虽然有所不同，但其结构一般都由科斗、喂料器、成型模具、密实机构、升降系统及控制系统等组成。

Although the working principle of all kinds of slippery sliver is different, its structure is generally composed of the pipe, feeder, molding mold, dense mechanism, lifting system and control system.

5 工艺流程及操作要点

5 process flow and key points of operation

基层提供——测量放线——混凝土拌和、运输——滑模摊铺-表面处理——人工修整——砼养生——切缝与填缝。

Basic level provision - measuring and laying out - concrete mixing and transportation - slipform paving - surface treatment - artificial dressing - concrete health - cutting and sealant.

6 材料与设备

6 materials and equipment

6.1原材料

6.1 raw materials

6.1.1粗集料

6.1.1 coarse aggregate

采用质地坚硬、强度高、耐磨耗、清洁干净的扎制碎石和砾石，针片状颗粒含量不大于15%，最大粒径不宜超过20mm。

With hard, high strength, wear-resistant, clean and clean crushed stone and gravel, the content of needle like particles is not more than 15%, and the maximum size should not exceed 20mm.

6.1.2细集料

6.1.2 fine aggregate

应采用级配良好、颗粒洁净、粒径小于5mm的河砂，砂区宜选用Ⅱ区。

River sand with good gradation, fine particle size and less than 5mm diameter should be used.

6.1.3水泥

6.1.3 cement

水泥宜选用低标号的普通硅酸盐水泥、矿渣水泥、粉煤灰水泥，水泥不能受潮或长时间存放。

Low grade cement, slag cement and fly ash cement should be selected for cement, and cement should not be dampened or stored for a long time.

6.1.4外加剂

6.1.4 admixture

合理选用外加剂是配制混凝土成功与否的技术关键之一。常用混凝土外加剂如下：

Reasonable selection of admixtures is one of the key technologies for the success of concrete preparation. The commonly used concrete admixtures are as follows:

复合型减水剂：多功能复合型减水剂是当前混凝土工程中使用极为广泛的减水剂。

Compound water reducer: multifunctional compound water reducing agent is widely used in concrete engineering at present.

引气剂、引气减水剂 .引气剂是在混凝土搅拌工程中，能引入大量分布均匀的、稳定且封闭的微小气泡，以减少混凝土拌和物泌水离析、改善和易性，并能显著提高硬化混凝土抗冻融耐久性的外加剂。

Air entraining agent and air entraining water reducing agent. In the concrete mixing project, a large number of uniform, stable and closed small bubbles can be introduced in the concrete mixing project to reduce the segregation, improvement and ease of the mixture of concrete mixture, and can significantly improve the durability of the hardened concrete.

缓凝剂 :缓凝剂能延缓混凝土凝结时间，并对混凝土后期强度发展无不利影响的外加剂.

Retarder: retarder can retard the setting time of concrete, and has no adverse effect on the development of concrete's later strength.

6.1.5拌和水

6.1.5 mixing water

用于配制混凝土质量要求与普通混凝土相同，即不得影响混凝土的和易性及凝结；不得有损于混凝土强度发展；不得降低混凝土的耐久性；不得污染混凝土表面。

The quality requirements used in the preparation of concrete are the same as that of ordinary concrete, that is, it can not affect the workability and condensation of concrete; it should not detract from the development of concrete strength; it must not reduce the durability of concrete; it should not pollute the surface of concrete.

6.2设备配置：

6.2 device configuration:

（1）装载机两台：

(1) two loaders:

（2）强制式混凝土拌和站一座，

(2) a forcible concrete mixing station,

（3）混凝土运输车两台。

(3) two concrete transport vehicles.

（4）高马科GT3600摊铺机一台。

(4) a GT3600 paver of high Marco.

（5）割缝机一台

(5) a slotting machine

7 质量控制

7 quality control

7.1质量组织保证。

7.1 quality organization guarantee.

执行项目经理总负责制，建立质量保证体系，由项目部经理担任组长，项目技术负责人担任副组长，组员由项目工程师及现场施工技术人员组成。

The project manager is responsible for the overall responsibility system and the quality assurance system is established. The project manager is the leader of the project. The project technician is the deputy leader and the team member is composed of the project engineer and the field construction technician.

7.2明确质量责任

7.2 clear quality responsibility

项目部与施工人员签定质量目标责任书，根据各自的岗位特点，制定岗位职责和质量任务目标，对每个施工环节都要做到不出现任何质量问题和质量隐患。从机械维修保养、原材料采购与检验等层层把关，确保每个环节的质量都在受控状态，以保证本工程整体质量不出现任何问题。

The project department and the construction staff sign the quality goal responsibility book, according to their respective post characteristics, make the job responsibilities and quality task targets, and do not have any quality problems and quality problems for each construction link. From the mechanical maintenance, raw material procurement and inspection layers to ensure that the quality of each link in the controlled state, to ensure that the overall quality of the project does not appear any problems.

7.3质量过程控制

7.3 quality process control

7.3.1抓质量管理，着力提高工程质量。针对事前、事中、事后三个过程的特点，全方位进行质量控制。

7.3.1 grasp the quality management and improve the quality of the project. In view of the characteristics of three processes in advance, in and after, the quality control is carried out in all directions.

7.3.2在事前控制中，着重抓了技术交底工作，技术交底做到一交到底，明

In the pre control process, 7.3.2 focused on the technical disclosure and made the technical disclosure to the end.