阅读说明：本技术 一种仿茅草屋面施工工法 (Thatch-like roof construction method ) 是由 周小虎 张发祥 陈兵章 刘江 牛红梅 朱冠生 路锴 于 2021-08-12 设计创作，主要内容包括：本发明的一种仿茅草屋面施工工法,包括定位放线、挖掘基坑、基底处理、脚手架架设、钢结构预埋件焊接、混凝土浇筑和养护、防水砂浆抹面、钢龙骨骨架屋顶焊接和仿茅草铺设等步骤。本发明施工方便、坚固耐用,上下层仿茅草的间距和覆盖的比例控制精确,操作安全,较大程度提高了仿茅草屋面施工质量及观感效果,具有较好的社会效益、经济效益和环保效益。(The invention relates to a thatch-imitated roof construction method which comprises the steps of positioning and paying off, digging a foundation pit, treating a base, erecting a scaffold, welding a steel structure embedded part, pouring and maintaining concrete, plastering waterproof mortar, welding a steel keel framework roof, paving thatch-imitated and the like. The invention has convenient construction, firmness and durability, accurate control of the distance between the upper and lower layers of the imitation thatch and the proportion of the coverage, safe operation, great improvement of the construction quality and the impression effect of the imitation thatch roof, and better social benefit, economic benefit and environmental protection benefit.)

1. A thatch-like roof construction method is characterized by comprising the following steps:

the method comprises the following steps: positioning and paying off, namely performing positioning and paying off work of the foundation pit by adopting a total station, calculating a positioning point of a basic sideline according to the longitudinal and transverse axes of the main structure and the section size, and then setting out and drawing out a range line of the foundation pit according to the depth and the gradient of the foundation pit;

step two: excavating a foundation pit, and when a machine is excavated to a position 20cm away from a base, manually clearing the base to a designed elevation, wherein the base is widened by 0.5-1.0 m compared with the plane size of the base;

step three: treating a substrate, namely performing secondary-eight lime soil replacement treatment on the substrate, wherein the bearing capacity of the substrate after the replacement treatment is determined by a field static load test and is not less than 260 kpa;

step four: erecting a scaffold, namely erecting the scaffold by using a combination of steel pipes and fasteners at the periphery of a foundation pit, laying templates, and sealing gaps between adjacent templates by using an adhesive tape to prevent the occurrence of a honeycomb phenomenon caused by slurry leakage during pouring;

step five: welding a steel structure embedded part, wherein the steel structure embedded part is formed by welding a steel bar with the HRB400 grade and the diameter of 18 with a steel plate with the thickness of 4mm, and after the binding of the wall steel bars is finished, welding the steel bars according to the interval of not more than 1 meter in the longitudinal and transverse directions;

step six: placing the steel structure embedded part into the foundation pit, pouring by using a concrete conveying pump, continuously performing concrete pouring for 3.5 hours or less, and covering the surface of the concrete by using a plastic film and a heat-preservation cotton blanket for heat preservation after pouring is finished so as to ensure that the surface of the concrete is not frozen;

step seven: the waterproof mortar is plastered, after the concrete is solidified and dried, the waterproof mortar is plastered on the surface of the wall, and the position which is plastered is covered and maintained by a plastic film in time, so that the construction quality is ensured;

step eight: welding the steel keel frame roof, namely welding 40-4 flat steel and a steel structure embedded part to form a closed steel keel frame roof;

step nine: imitative thatch is laid, will imitate thatch and adopt the lead wire to tie up on steel joist skeleton roof, imitative thatch covers layer upon layer, and 1/3 is no less than to upper cover lower floor, and the lead wire joint to the ligature conceals, promotes the whole impression effect of imitative thatch roofing.

2. The imitation thatch roofing construction method of claim 1, wherein in the fourth step, the steel pipe has an outer diameter of 48mm, a wall thickness of 3.50mm and a steel strength grade of Q235-a.

3. The imitation thatch roofing construction method of claim 2, wherein in the fourth step, the minimum distance of the opening of the fastener when clamping the steel pipe is not less than 5 mm.

4. The imitation thatch roof construction method of claim 3, wherein in the fifth step, the steel bars need to be straightened, cut off, and bent to be welded.

5. The imitation thatch roofing construction method of claim 4, wherein when the steel bars are straightened, the cold drawing rate of the steel bars cannot be more than 1%, and the inner diameter of the bent arcs of the steel bars should not be less than 4 times of the diameter of the steel bars.

Technical Field

The invention relates to the field of building construction, in particular to a thatch-like roof construction method.

Background

Traditional imitative thatch roofing way is under construction for the mode of penetrating nail fixed keel, takes a lot of work and labours, and is great to accomplishing the waterproof destruction of roofing, has great safety and quality hidden danger, under the tight condition of time limit for a project, causes very big difficulty for the construction.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a thatch-like roof construction method.

A construction method of an imitation thatch roof comprises the following steps:

the method comprises the following steps: positioning and paying off, namely performing positioning and paying off work of the foundation pit by adopting a total station, calculating a positioning point of a basic sideline according to the longitudinal and transverse axes of the main structure and the section size, and then setting out and drawing out a range line of the foundation pit according to the depth and the gradient of the foundation pit;

step two: excavating a foundation pit, and when a machine is excavated to a position 20cm away from a base, manually clearing the base to a designed elevation, wherein the base is widened by 0.5-1.0 m compared with the plane size of the base;

step three: treating a substrate, namely performing secondary-eight lime soil replacement treatment on the substrate, wherein the bearing capacity of the substrate after the replacement treatment is determined by a field static load test and is not less than 260 kpa;

step four: erecting a scaffold, namely erecting the scaffold by using a combination of steel pipes and fasteners at the periphery of a foundation pit, laying templates, and sealing gaps between adjacent templates by using an adhesive tape to prevent the occurrence of a honeycomb phenomenon caused by slurry leakage during pouring;

step five: welding a steel structure embedded part, wherein the steel structure embedded part is formed by welding a steel bar with the HRB400 grade and the diameter of 18 with a steel plate with the thickness of 4mm, and after the binding of the wall steel bars is finished, welding the steel bars according to the interval of not more than 1 meter in the longitudinal and transverse directions;

step six: placing the steel structure embedded part into the foundation pit, pouring by using a concrete conveying pump, continuously performing concrete pouring for 3.5 hours or less, and covering the surface of the concrete by using a plastic film and a heat-preservation cotton blanket for heat preservation after pouring is finished so as to ensure that the surface of the concrete is not frozen;

step seven: the waterproof mortar is plastered, after the concrete is solidified and dried, the waterproof mortar is plastered on the surface of the wall, and the position which is plastered is covered and maintained by a plastic film in time, so that the construction quality is ensured;

step eight: welding the steel keel frame roof, namely welding 40-4 flat steel and a steel structure embedded part to form a closed steel keel frame roof;

step nine: imitative thatch is laid, will imitate thatch and adopt the lead wire to tie up on steel joist skeleton roof, imitative thatch covers layer upon layer, and 1/3 is no less than to upper cover lower floor, and the lead wire joint to the ligature conceals, promotes the whole impression effect of imitative thatch roofing.

Further, in the fourth step, the outer diameter of the steel pipe is 48mm, the wall thickness is 3.50mm, and the strength grade of the steel is Q235-A.

Furthermore, in the fourth step, the minimum distance of the opening of the fastener when the steel pipe is clamped is not less than 5 mm.

Furthermore, in the fifth step, the steel bars need to be straightened, cut off and bent to be welded.

Furthermore, when the reinforcing steel bar is straightened, the cold drawing rate of the reinforcing steel bar cannot be more than 1%, and the inner diameter of the bent arc of the reinforcing steel bar cannot be less than 4 times of the diameter of the reinforcing steel bar.

In conclusion, the invention has the following beneficial effects:

the invention has convenient construction, firmness and durability, accurate control of the distance between the upper and lower layers of the imitation thatch and the proportion of the coverage, safe operation, great improvement of the construction quality and the impression effect of the imitation thatch roof, and better social benefit, economic benefit and environmental protection benefit.

Detailed Description

A construction method of an imitation thatch roof comprises the following steps:

the method comprises the following steps: positioning and paying off, namely performing positioning and paying off work of the foundation pit by adopting a total station, calculating a positioning point of a basic sideline according to the longitudinal and transverse axes of the main structure and the section size, and then setting out and drawing out a range line of the foundation pit according to the depth and the gradient of the foundation pit;

step two: excavating a foundation pit, and when a machine is excavated to a position 20cm away from a base, manually clearing the base to a designed elevation, wherein the base is widened by 0.5-1.0 m compared with the plane size of the base;

step three: treating a substrate, namely performing secondary-eight lime soil replacement treatment on the substrate, wherein the bearing capacity of the substrate after the replacement treatment is determined by a field static load test and is not less than 260 kpa;

step four: erecting a scaffold, namely erecting the scaffold by using a combination of steel pipes and fasteners at the periphery of a foundation pit, laying templates, and sealing gaps between adjacent templates by using an adhesive tape to prevent the occurrence of a honeycomb phenomenon caused by slurry leakage during pouring;

step five: welding a steel structure embedded part, wherein the steel structure embedded part is formed by welding a steel bar with the HRB400 grade and the diameter of 18 with a steel plate with the thickness of 4mm, and after the binding of the wall steel bars is finished, welding the steel bars according to the interval of not more than 1 meter in the longitudinal and transverse directions;

step six: placing the steel structure embedded part into the foundation pit, pouring by using a concrete conveying pump, continuously performing concrete pouring for 3.5 hours or less, and covering the surface of the concrete by using a plastic film and a heat-preservation cotton blanket for heat preservation after pouring is finished so as to ensure that the surface of the concrete is not frozen;

step seven: the waterproof mortar is plastered, after the concrete is solidified and dried, the waterproof mortar is plastered on the surface of the wall, and the position which is plastered is covered and maintained by a plastic film in time, so that the construction quality is ensured;

step eight: welding the steel keel frame roof, namely welding 40-4 flat steel and a steel structure embedded part to form a closed steel keel frame roof;

step nine: imitative thatch is laid, will imitate thatch and adopt the lead wire to tie up on steel joist skeleton roof, imitative thatch covers layer upon layer, and 1/3 is no less than to upper cover lower floor, and the lead wire joint to the ligature conceals, promotes the whole impression effect of imitative thatch roofing.

Further, in the fourth step, the outer diameter of the steel pipe is 48mm, the wall thickness is 3.50mm, and the strength grade of the steel is Q235-A.

Furthermore, in the fourth step, the minimum distance of the opening of the fastener when the steel pipe is clamped is not less than 5 mm.

Furthermore, in the fifth step, the steel bars need to be straightened, cut off and bent to be welded.

Furthermore, when the reinforcing steel bar is straightened, the cold drawing rate of the reinforcing steel bar cannot be more than 1%, and the inner diameter of the bent arc of the reinforcing steel bar cannot be less than 4 times of the diameter of the reinforcing steel bar.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.