阅读说明：本技术 一种线间沟塑料模型施工方法 (Construction method of inter-line trench plastic model ) 是由 王永亮 杨天模 孙文彬 黄静 杜守宁 席茂 刘洋 苟吉虎 胡晋川 陈荣 许松 于 2019-10-31 设计创作，主要内容包括：本发明提供一种线间沟塑料模型施工方法,该方法采用塑料模板代替竹胶板或钢模板进行线间沟施工,保证塑料模板线性的施工措施如下：水沟顶面标高的控制：通过固定矩管的顶标高,控制水沟的顶面高程；模板安装时,在距管上口5-15cm处内侧采用方管对两侧塑料模板进行加固,模板线形跟着方管走,两侧方管之间采用钢筋进行支撑；每次模板立模不超过40m；第二次立模时,模板与前一次立模浇筑的混凝土有不小于0.5m的搭接长度。以解决现有线间沟施工存在的竹胶板施工易损坏,重复利用率低,工程成本高,施工质量不可控,而钢模板施工操作困难,增加作业人员和机械,施工进度缓慢,且施工工期不可控等问题。属于建筑工程施工领域。(The invention provides a construction method of an interline trench plastic model, which adopts a plastic template to replace a bamboo plywood or a steel template to carry out interline trench construction, and ensures that the construction measures of the linearity of the plastic template are as follows: controlling the elevation of the top surface of the ditch: controlling the elevation of the top surface of the ditch by fixing the elevation of the top of the rectangular pipe; when the template is installed, reinforcing the plastic templates at two sides by adopting a square pipe at the inner side 5-15cm away from the upper opening of the pipe, wherein the linear shape of the template follows the square pipe, and the square pipes at two sides are supported by adopting reinforcing steel bars; the formwork erection time is not more than 40m each time; when the formwork is erected for the second time, the overlapping length of the formwork and the concrete poured by the previous formwork erection is not less than 0.5 m. The problems that the construction of a bamboo plywood is easy to damage, the repeated utilization rate is low, the engineering cost is high, the construction quality is uncontrollable, the construction operation of a steel formwork is difficult, operating personnel and machinery are increased, the construction progress is slow, the construction period is uncontrollable and the like in the existing line-to-line groove construction are solved. Belongs to the field of building engineering construction.)

1. A construction method of an interline trench plastic model is characterized by comprising the following steps: the method adopts the plastic template to replace a bamboo plywood or a steel template for inter-row ditch construction, and the construction measures for ensuring the linearity of the plastic template are as follows: a. controlling the elevation of the top surface of the ditch: controlling the elevation of the top surface of the ditch by fixing the elevation of the top of the rectangular pipe; b. when the template is installed, reinforcing the plastic templates at two sides by adopting a square pipe at the inner side 5-15cm away from the upper opening of the pipe, wherein the linear shape of the template follows the square pipe, and the square pipes at two sides are supported by adopting reinforcing steel bars; c. the formwork erection time is not more than 40m each time; d. when the formwork is erected for the second time, the overlapping length of the formwork and the concrete poured by the previous formwork erection is not less than 0.5 m.

2. The construction method of the plastic model for the line-to-line trench according to claim 1, wherein the concrete construction method is as follows:

measuring and positioning the center of the ditch: measuring the center of a ditch according to the coordinate size of a design drawing, marking the measured center position, scattering lime lines by taking the lime lines as the center and according to the size of the ditch, excavating a groove, controlling the mechanical excavation depth to be 10cm away from the elevation of the designed groove bottom when the groove bottom is excavated, manually excavating 10cm on each side to the designed groove wall position when two sides of the groove wall are excavated, then manually cleaning the residual soil in the groove, and tamping the bottom of the groove by using a small tamping machine when the groove is filled with the deficient soil;

after the foundation trench is excavated and the bottom of the trench is tamped, erecting a vertical mold after acceptance inspection is passed, strictly controlling the elevation of the drainage longitudinal slope, strictly controlling the elevation and the position of a ditch, cleaning the surface and coating a film agent when a template is installed, uniformly coating a release agent, and firmly binding an upper opening with a steel wire and a steel pipe support when the template is installed;

the method comprises the following steps of constructing a ditch by two-step erecting formwork erection construction, constructing a ditch bottom plate, and erecting a ditch wall body formwork after concrete construction of the ditch bottom plate is completed;

then, concrete pouring is sequentially carried out; removing the mold and maintaining; setting a settlement joint; installing a cover plate; and (5) detecting the quality of a finished product.

3. The construction method of the plastic model for the line-to-line trench as claimed in claim 2, wherein concrete pouring is as follows:

after the template is firmly reinforced, performing concrete pouring, adopting an inserted vibrating rod to vibrate and compact, before the concrete pouring, testing the performance of the concrete, and after the requirements are met, performing the concrete pouring;

during concrete pouring, a specially-assigned person is arranged to check the stability of the formwork and the support, when looseness, deformation and displacement are found, the concrete is processed in time, concrete pouring is carried out on the side wall of the drainage ditch, the concrete is fully vibrated during pouring, the vibrating rod is quickly inserted and slowly pulled out, the exposed surface of the concrete is leveled during surface collection, secondary press polishing is adopted to perform secondary press polishing again after the concrete is initially set, water is strictly forbidden during surface polishing, and the quality of surface concrete is prevented from being influenced by excessive operation.

4. The construction method of the plastic model of the wire-line trench according to claim 2, wherein the requirements of form removal and maintenance are as follows: and (3) after the strength of the concrete reaches 75%, detaching the formwork according to a method of 'mounting and detaching firstly, mounting and detaching secondly', detaching the bracket firstly, detaching the formwork secondly, paying attention to protect the concrete when detaching the formwork, avoiding the damage of the surface and edges and corners, not needing to be hard struck by a pry bar and a heavy hammer, and performing covering and maintenance by a watering film after detaching the formwork.

5. The construction method of the plastic model of the line-to-line trench as claimed in claim 2, wherein the settlement joint is set as follows: the settlement joint is arranged according to the design requirement, the settlement joint of the bottom plate and the wall body is arranged on a vertical surface, and the settlement joint penetrates through the ditch bottom plate and the upper wall body.

Technical Field

The invention relates to a construction method of an inter-line trench plastic model, and belongs to the field of construction of constructional engineering.

Background

The inter-line ditch is a common form in a drainage system of building construction and is widely used in China. In the construction process of the line ditch, various problems of the line ditch often occur because effective measures cannot be taken. At present, the line-to-line trench construction mainly comprises the following two modes: 1. the bamboo plywood is adopted for construction, so that the material is light and convenient to construct, but the bamboo plywood is seriously damaged, the repeated utilization rate is not high, the engineering cost is greatly increased, and the construction quality is uncontrollable; 2. the steel template construction is adopted, the quality of a constructed finished product is good, the template is heavy, the operation is not easy to carry out by personnel, the construction needs to be carried out by matching with machinery, the number of required operating personnel and the number of required machinery are increased, the construction progress is slow, and the construction period is not controllable.

Disclosure of Invention

The invention provides a construction method of an interline trench plastic model, which aims to solve the problems that the construction of a bamboo plywood is easy to damage, the repeated utilization rate is low, the engineering cost is high, the construction quality is uncontrollable, the construction operation of a steel template is difficult, the number of operators and machines is increased, the construction progress is slow, the construction period is uncontrollable and the like in the conventional interline trench construction.

In order to solve the problems, the construction method of the plastic model of the line-to-line trench is supposed to be adopted, the method adopts the plastic template to replace a bamboo plywood or a steel template to carry out the line-to-line trench construction, and the construction measures for ensuring the linearity of the plastic template are as follows: a. controlling the elevation of the top surface of the ditch: controlling the elevation of the top surface of the ditch by fixing the elevation of the top of the rectangular pipe; b. when the template is installed, reinforcing the plastic templates at two sides by adopting a square pipe at the inner side 5-15cm away from the upper opening of the pipe, wherein the linear shape of the template follows the square pipe, and the square pipes at two sides are supported by adopting reinforcing steel bars; c. the formwork erection time is not more than 40m each time; d. when the formwork is erected for the second time, the overlapping length of the formwork and the concrete poured by the previous formwork erection is not less than 0.5 m.

The specific construction method comprises the following steps:

measuring and positioning the center of the ditch: measuring the center of a ditch according to the coordinate size of a design drawing, marking the measured center position, scattering lime lines by taking the lime lines as the center and according to the size of the ditch, excavating a groove, controlling the mechanical excavation depth to be 10cm away from the elevation of the designed groove bottom when the groove bottom is excavated, manually excavating 10cm on each side to the designed groove wall position when two sides of the groove wall are excavated, then manually cleaning the residual soil in the groove, and tamping the bottom of the groove by using a small tamping machine when the groove is filled with the deficient soil;

after the foundation trench is excavated and the bottom of the trench is tamped, erecting a vertical mold after acceptance inspection is passed, strictly controlling the elevation of the drainage longitudinal slope, strictly controlling the elevation and the position of a ditch, cleaning the surface and coating a film agent when a template is installed, uniformly coating a release agent, and firmly binding an upper opening with a steel wire and a steel pipe support when the template is installed;

the method comprises the following steps of constructing a ditch by two-step erecting formwork erection construction, constructing a ditch bottom plate, and erecting a ditch wall body formwork after concrete construction of the ditch bottom plate is completed;

then, concrete pouring is sequentially carried out; removing the mold and maintaining; setting a settlement joint; installing a cover plate; and (5) detecting the quality of a finished product.

Concrete pouring is as follows:

after the template is firmly reinforced, performing concrete pouring, adopting an inserted vibrating rod to vibrate and compact, before the concrete pouring, testing the performance of the concrete, and after the requirements are met, performing the concrete pouring;

during the concrete pouring, a specially-assigned person is arranged to check the stability of the template and the support, when looseness, deformation and displacement are found, the concrete is processed in time, the concrete on the side wall of the drainage ditch is poured, the concrete is fully vibrated during pouring, the vibrating rod is quickly inserted and slowly pulled, the exposed surface of the concrete is smoothed during surface collection, secondary press polishing is adopted to perform surface plastering again after the concrete is initially set, water is strictly forbidden during surface plastering, and the quality of surface concrete is prevented from being influenced by excessive operation;

concrete pouring considerations are as follows:

(1) the connection mode of the bottom plate and the wall construction joint is as follows: when the bottom plate concrete is poured, embedding connecting reinforcing steel bars with the diameter not less than 16mm at the center of the wall body, wherein the embedding depth and the exposed length of the connecting reinforcing steel bars are 15d, and the distance is 20 cm;

(2) before the concrete is newly poured at the construction joint, performing chiseling treatment on the surface of the hardened concrete and fully wetting the surface, wherein the area of the exposed fresh concrete after chiseling is not less than 75% of the total area, and when manual chiseling is adopted, the strength of the concrete is not less than 2.5 MPa; when mechanical chiseling is adopted, the strength of concrete is not lower than 10 MPa;

(3) the insertion is fast, and the extraction is slow;

(4) the time of each insertion vibration is 20-30 seconds, and the concrete does not obviously sink any more and no air bubbles appear, so that the time of starching is taken as the standard;

(5) during vibration, the vibrator is inserted into the lower layer concrete by 10 cm;

(6) the distance between the front part and the rear part of the vibrating insertion is 30-50 cm;

(7) the template is vibrated without touching the template, and the template is tapped with a hammer while vibrating near the template.

The requirements for form removal and maintenance are as follows: and (3) after the strength of the concrete reaches 75%, detaching the formwork according to a method of 'mounting and detaching firstly, mounting and detaching secondly', detaching the bracket firstly, detaching the formwork secondly, paying attention to protect the concrete when detaching the formwork, avoiding the damage of the surface and edges and corners, not needing to be hard struck by a pry bar and a heavy hammer, and performing covering and maintenance by a watering film after detaching the formwork.

The setting requirements of the settlement joint are as follows: the settlement joint is arranged according to the design requirement, the settlement joint of the bottom plate and the wall body is arranged on a vertical surface, and the settlement joint penetrates through the ditch bottom plate and the upper wall body.

Compared with the prior art, the method of the invention not only has convenient and fast construction, but also creates good economic benefit, and the specific conditions are as follows:

analysis from construction time: for drainage ditch construction, when steel templates are conventionally adopted for construction, construction can be carried out for 40m in two days, the method can be completed in one day, half of the time is saved, the construction period is shortened, and meanwhile, the cost of project management and service is obviously saved;

analysis from material usage: the plastic template is stable and durable, is not easy to damage, is water-resistant and corrosion-resistant, has multiple turnover times, and reduces the use cost.

Social benefits are as follows: the drainage ditch is constructed by adopting the plastic template, the construction is safe, the quality is reliable, the convenience and the rapidness are realized, the cost is low, the construction period is short, the benefit is good, the jade millstone railway 22 is used as an example, the drainage ditch of the project is designed to be 23700m and has 28000 square in total, the construction period is short, and the construction task is difficult.

The invention also has the following advantages:

1. the finished product quality is reliable, the finished product line shape of the ditch constructed by adopting the plastic template is smooth and straight, the surface of the concrete is smooth and not rough, and the appearance is beautiful.

2. The process has strong adaptability, can be randomly formed into any geometric shape, is customized according to construction requirements, and meets the requirements of supporting the formwork of the ditch with various shapes.

3. The used machinery is few, and construction machinery such as a digging machine and the like is not needed to be matched for construction during construction, so that the emission of pollutants such as waste gas and the like is reduced.

4. Compared with a bamboo plywood, the plastic formwork reduces the secondary edge reinforcing process, so that the construction progress is accelerated, and the labor force is reduced.

5. According to the load condition of the construction part, the secondary ridge distance or the thickness of the template is adjusted when the plastic template is processed, so that the bearing capacity of the template meets the concrete side pressure, materials are utilized to the maximum degree, and the waste of the materials is reduced.

Drawings

FIG. 1 is a process flow diagram of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.