First day at the construction site today. The construction site is located on the east side of Fuwan Road in Fuzhou. Because you need a builder's post certificate to enter the construction site, and you have to wait a few days to enter the construction site, you have to learn to do some indoor work in the next few days. Today, I mainly learned the basic situation of some construction sites. The construction unit of this project is Fujian Liujian Group Co., Ltd. and Fuzhou Yongyi Co., Ltd., the design unit is Fujian Apollo Co., Ltd., the exploration unit is Fujian Forestry Exploration and Design Institute, the supervision unit is Fujian Engineering Consulting and Supervision Co., Ltd., and the construction unit is Fuqing Xiuhui Construction Engineering Company. It covers an area of about 654.38 million square meters, with an investment of about 200 million yuan and a construction period of 760 calendar days. This is a large-scale project.
Wednesday, March 2, morning: sunny afternoon: sunny.
Because the entry and exit procedures have not been cleared, I can't enter the construction site. In the morning, the builder arranged to do some simple indoor work. The first task of my internship is to draw a simple plan with CAD. The drawings looked simple, so I agreed. However, because there is no CAD course in the school, some basic CAD knowledge is self-taught, and there are few opportunities to draw with CAD at ordinary times, so the painting is slow, but it was finally finished before noon. After inspection, the constructor found many mistakes, and some symbols were drawn in the same way without understanding their meanings, but they were all wrong. For example, the column symbol is 2 1(2 1A). In the design description, there are columns representing floors 3 ~ 6 in brackets, and columns representing floors 1~2 outside brackets. When I draw, each layer is represented by 2 1(2 1A). After an afternoon of revision and redrawing, we finally drew a drawing that meets the requirements of the builder.
Thursday, March 3rd: morning: sunny afternoon: cloudy.
Today, I went to the construction site of another construction unit with the construction party, and it has been basically completed. This time, I went to fill in some acceptance materials, all of which were filled in during the construction process. We need to file these materials. General engineering data in the office should be in triplicate, one for the construction unit, one for the supervision unit and one for the construction unit. Due to the large number of documents, it is quite troublesome to sort them out, so the builder said that it is possible to do this in the next few days. Today, I mainly studied some engineering terms, such as: construction engineering refers to civil engineering, construction engineering, installation engineering of lines, pipelines and equipment, and decoration engineering. Construction project refers to the technical work such as planning, exploration, design, construction and completion of newly built, rebuilt and expanded houses, buildings and their affiliated structures and completed engineering entities. Unit project refers to buildings and structures that have independent construction conditions and can form independent functions. Sub-unit project refers to large-scale unit project, and the part that can form independent use function can be classified as sub-unit project.
Friday, March 4th, morning: shower, afternoon: shower.
Today, I learned the Regulations on the Management of Construction Project Documents in Fujian Province (construction fascicle). I thought a project would only be completed, but I didn't expect such a complicated document management program! In the process of studying "Regulations on the Management of Construction Project Documents in Fujian Province", I got a general understanding of some knowledge about the management of construction project documents.
The documents required for general construction projects include: ① quality control data of construction projects; ② Safety and function test data of construction projects; (3) construction project preparation documents; (4) the construction project completion documents.
The first two main ones include many small divisions, sub-divisions and sub-projects ① Quality control data of building engineering ② Safety and function testing data of building engineering are divided into: ① Buildings and institutions ② Non-drainage and heating engineering ③ Building electricity ④ Intelligent building ⑤ Ventilation and air conditioning ⑤ Elevator.
Saturday morning, March 5th: heavy rain; afternoon: heavy rain.
Today, the builder brought back some test data of test blocks and taught me how to evaluate whether the test blocks are qualified or not. The first is to learn the test and evaluation methods of coagulation strength. There are two main methods: ① statistical method ② non-statistical method.
① Statistical methods mainly meet the following conditions: (10 group or more)
Mfcu≥fcu，k 0.7σo fcu，min≥fcu，k-0.7σo
And when the strength is less than or equal to ≤C20, FCU, min is more than or equal to 0.85 FCU, k.
When the strength >; At C20, fcu, minimum value ≥0.90fcu, k
Among them:
Mfcu: average compressive strength of concrete cubes in the same acceptance batch (N/mm2)
Fcuk: Standard value of compressive strength of concrete cube (N/mm2)
σo: standard deviation of compressive strength of acceptance cube.
Fcu, min: the minimum compressive strength of the same batch of concrete cubes.
σo = 0.59/m∑δFCU，I
Among them:
Fcu, I: the difference between the maximum and minimum compressive strength of the cube of the first batch of specimens.
M: the total number of data batches used to determine the standard deviation of compressive strength of concrete cubes in the acceptance batches.
When there is not enough data to find the standard deviation, the following formula should be satisfied:
Mfcu- 1，fcu≥0.9fcu，k
Fcu？ Minimum value ≥ 2fcu, k
FCU-standard deviation of compressive strength of concrete cube in the same acceptance batch (N/mm2)
When sfcu
Enter 1, and enter 2: qualification judgment coefficient.
The number of specimens is10-1415-24 ≥ 25.
Enter11.701.651.60.
Enter 2 0.9 0.85 0.85.
Sfcu=[(∑ fcu？ i2-n？ mfcu2)/(n- 1)] 1/2
② Non-statistical methods (below 10 group)
Mfcu≥ 1. 15fcu？ k
Fcu？ min≥0.95fcu？ k
The evaluation method of mortar strength is similar (mathematical statistics).
Mfm.k (average value) ≥fm.k (design strength grade)
Frequency modulation kmin (minimum value) ≥0.75 frequency modulation k
After learning these theoretical knowledge, I evaluated many test reports myself and found that they all met the requirements.
Sunday morning, March 6: heavy rain, afternoon: heavy rain.
The main task today is to sort out the data recorded by building settlement observation, draw the plane partition map of settlement observation points, and draw the settlement observation curve of each point. The layout of settlement observation points is composed of the main outline of the building, settlement observation points and instrument drawings. There are 8 observation points in the figure.
The settlement observation curve of each point shows the cumulative settlement of the first observation on the coordinates, and the settlement is calculated according to the elevation measured at regular intervals.
Monday morning of March 7th: rainstorm afternoon: rainstorm.
Today, I mainly learn how to sort out the "Inspection Lot, Sub-item, Division (Sub-division) Engineering Quality Acceptance Records" in the "Construction Engineering Quality Control Data". These data can be divided into four sub-items: ① foundation and foundation; ② Main structure; ③ Building decoration; ④ Building roof; And each subdivisional work is divided into several subdivisional work and subdivisional work inspection lot.
These data are the acceptance records of each process in the process of engineering construction.
(division) (division)
Foundation and foundation: unsupported earthwork, supported earthwork, foundation treatment, underground waterproofing of pile foundation, concrete foundation, reinforced concrete masonry foundation and steel structure.
Main structure: concrete structure, steel reinforced concrete structure, masonry structure, steel structure, wood structure, grid structure and cable-membrane structure.
Decoration: floor, plastering, doors and windows, suspended ceiling, light partition wall, decorative board (brick), curtain wall, painting, pasting, soft package and details.
Roofing: coiled material waterproof roof, coated waterproof roof, rigid waterproof roof, tile roof and thermal insulation roof.
Of course, not every project has all sub-division projects, but there are several.
Tuesday, March 8th morning: moderate rain afternoon: cloudy.
Today, it is mainly to sort out the safety and function test data of construction projects. This data can also be divided into six parts: ① buildings and structures; ② Water supply and drainage and heating; ③ Building electricity; ④ Intelligent building; ⑤ Ventilation and air conditioning; ⑤ Elevator. Today is mainly to sort out the information of buildings and structures. These materials are all test records, measurement records and the like. Such as: ① test records of roof rainwater (water storage); (2) groundwater waterproof effect inspection records; (3) groundwater storage test records with waterproof requirements; (4) building verticality, elevation, total height measurement records; ⑤ Inspection records of flue and extraction pipeline; ⑧ Physical performance test records of curtain wall and external window; Today building settlement observation records; Pet-name ruby energy saving and heat preservation measurement records; Pet-name ruby indoor environment inspection report.
Wednesday, March 9, morning: eyes, afternoon: eyes.
Today we mainly study the drawings of the construction site. These drawings can generally be divided into four parts: ① building ② structure ③ water supply and drainage ④ electricity. Each part of the drawings consists of a catalogue, general design instructions, various drawings and modification notices. Design overview is a necessary description of drawing design. For example:
An overview of architectural design includes: design basis, general situation of the project, and various sub-projects (wall, floor, ceiling, roof, outdoor works, doors and windows, painting, etc.). ).
Architectural drawings are mainly composed of plan, elevation and section.
The structural diagram is mainly composed of foundation, column network, structure of each floor, roof plan, beam and slab reinforcement diagram, roof reinforcement diagram, stairs and other details. There are few electrical and water supply and drainage construction drawings, so there are many places that I don't understand, so I rarely read them.
Thursday, March 10, morning: eye, afternoon: eye.
There are ten buildings in this project, one of which has been capped, and the concealed engineering acceptance of building electricity will be carried out tomorrow. The concealed work of electrical installation engineering refers to the construction process of electrical specialty that will be concealed by the next construction process of this specialty or other professional construction processes, and the main inspection contents of electrical concealed work of engineering projects that can no longer be inspected under normal circumstances are: ① variety, specification and quantity; ② Location, elevation and coordinates; ③ Quality standard requirements; ④ Quality status of installation process.
The construction unit shall, in accordance with the provisions of the current national standards, do a good job in the inspection and acceptance of concealed works of electrical installation projects, and fill in the acceptance records of concealed works. If necessary, drawings shall be attached, and professional supervisors (professionals of the construction unit) shall check whether it meets the requirements and make clear the opinions that can be concealed. You can't hide until the visa is confirmed. Take cover engineering acceptance records should be clear, specific and complete, the conclusion should be accurate, and the visas of relevant personnel should be complete.
March 1 1 Friday morning: eye afternoon: eye.
Because the procedures for entering the construction site were unclear, I was introduced to another construction site by my classmates in order to know more about the construction site. The site is the high-tech experimental center building of the Provincial Academy of Agricultural Sciences, which is in the foundation construction stage. Today is the first time I came to the construction site, and I saw the foundation pit and supporting structure. I have seen it before when I passed by the construction site, but most people know what it is. I used to see the formwork of brick foundation beam and pile cap, but I thought it was a pool or something. Seeing the steel pipe on the supporting structure, I thought it was a municipal pipeline. Now I finally know the names of those things. The supporting structure is used to support the surrounding earthwork and consists of I-beams and steel pipes. I-beams stand around, and steel pipes are used for support. Piles are all cast-in-place piles with a diameter of one meter. The size of the cap varies with the number of piles, and the height is about one meter. Some large pile caps are more than two meters.
Saturday, March 12: eye in the morning and eye in the afternoon.
I spent most of my time on the construction site today. The workers on the construction site mainly dig the pit of the pile cap and cut the pile. Due to the large volume of the pile cap and the large amount of earthwork, it will take several days to dig the pile cap, and pile cutting is also a time-consuming work. It takes a long time to cut a pile. Pile cutting does not mean to cut off all the pile heads, but depends on the design requirements, generally at the bottom of the pile cap100 mm. Moreover, the reinforcement in the pile must extend into the pile cap 1M to play an anchoring role. Because the construction site has not started on a large scale, there are relatively few workers. Almost all these works will be carried out on the construction site in the next few days. Part of the pile caps have been dug and bricklaying has begun. Bricklaying is for modeling. Because the template is underground, it can't be built with templates as usual. At the same time, the height of the cap is relatively high and the earth pressure is relatively high. Masonry with a thickness of 24mm is adopted, and the height of foundation beam is relatively small, only 12mm thick, and masonry with a thickness of one shun and one ding is also adopted.
March 13 Sunday morning: eyes afternoon: eyes
The construction site is still cutting piles, digging caps and laying bricks, which is no different from the previous days. So today I mainly study the construction drawing and get some basic information about the project, as follows:
This project is the building of Fujian Agricultural High-tech Experimental Center, designed by China Northeast Architectural Design and Research Institute and constructed by China Construction No.7 Bureau and No.3 Company. (1) this project consists of basement, ground 18-22 main building and four-story podium; ② The cast-in-place reinforced concrete frame-shear wall structure is adopted. The safety level of building structure is Grade II, the safety level of pile foundation is Grade I, the design level of foundation is Grade A, and the seismic fortification intensity is 7 degrees. Seismic grade of institutions: a, the seismic registration of basement frame is Grade II, and the seismic grade of shear wall is Grade II; B, the seismic grade of the above-ground part and the main building frame is Grade II, and the seismic grade of the shear wall is Grade II.