Diary of civil construction workers' internship

Saturday, June 65438+10/October 65438+May 2005

Today, the first day of my internship. As soon as I entered the construction site, the person in charge of the construction site asked me to wear a helmet and work clothes. And said: "Here, you must remember' safety first'", I nodded and promised to obey the command in the future. Then, he said a lot of safety regulations on the construction site, and I kept them in mind. After asking my name, he introduced himself and said, "My name is Wang Jian. You can call me Mr. Wang in the future. I'm not much older than you. " .

Then, Mr. Wang gave me an overview of the project. The project is a commercial housing community developed by Guangzhou Gaoyi Investment Industry Co., Ltd., with a total area of 20,000 square meters. It consists of Kangning Building, Gezhi Building, Cuihua Building, Zifu Building and Yongting Building, of which Gezhi Building was built by Guangzhou Huadu Second Construction Engineering Co., Ltd. Gezhi Building-The building is five stories high, with shops on the ground floor and frame structure.

Sunday, 2005 65438+ 10/6

Today, Mr. Wang showed me the construction drawing and taught me the importance of looking at pictures. When looking at the picture, you should know the column spacing and column grid size of the structure, the section, height and span of the column and beam; Dimensional relationship between retaining wall and column axis; The thickness of the plate and structural elevation, etc. Clear column longitudinal reinforcement strength grade, specification, quantity and lap requirements; Specification, spacing and strength grade of stirrups; The change of reinforcement quantity of each column and column; The reinforcement requirements of beams and the changes of reinforcement quantity of beams and beams in each layer; Reinforcement requirements of plates, etc. Understand the strength grade of concrete used in each layer and other special requirements such as impermeability, corrosion resistance and anticorrosion. The audit of drawings is mainly to prevent the contradiction of some drawings from affecting the construction, such as whether there is contradiction between the building facade and the structure, whether the installation of pipelines has an impact on the structure, and whether the design of drawings can be realized. "

Monday, June 65438+10/October 65438+July 2005

I wrote down the general operation when I tied the column rebar today.

Before binding, check whether the position of the steel bar protruding from the lower part is within the setting-out range, and determine the distance between the steel bar inserted from the upper part and the column edge.

Wednesday, June 26th will be sunny.

An article in china construction news said that some architectural terms were derogated from in daily life. After reading it, I have a correct understanding of the original intention. Now the excerpt is as follows.

1, intrigue. This is the grandeur of Epang Palace described by Du Mu, a poet in the Tang Dynasty, in Fu to Epang Palace: "On the back of the cloister, the eaves are elegant, each holding its own terrain and intrigue." The "heart" here refers to the center of the house, the "bucket" refers to the combination, and the "corner" refers to the cornice. The word means that the eaves and corners of the house are connected to the center of the house like hooks, and the high corners are facing each other, such as fighting each other, vividly showing the staggered echo of the building structure, exquisite and chic. Now people use "intrigue" to describe people's intrigue and struggle with each other.

2. steal the beam and replace the column. This was originally a professional maintenance method in the construction of ancient buildings. Liang Sicheng, a contemporary architect, expounded this ancient building maintenance method in the architectural history of China. According to media reports, in the maintenance of the Potala Palace in Lhasa, engineers and technicians successfully replaced the rotten wooden columns by stealing beams and replacing columns. Now it is often used to describe people playing tricks in the dark, changing the content of things, replacing the good with the bad or replacing the good with the bad.

3. muddling along. Its original intention is a process in building construction. The quality requirements of some palaces and temples in ancient buildings are very strict. Before laying bricks, the surfaces of bricks should be cut and polished to make them fit together. This is called "grinding brick joints", and this process is called "grinding". When Peking Union Medical College Hospital was built, the engineering quality was very high, and the bricks were polished and spliced according to the standards of ancient buildings. Because this project was designed and built by Americans using boxer indemnity of the Qing government, China craftsmen called it "foreign work", and brick factory workers called the brick grinding process "foreign work". Now it is derogatory, especially the negative slack and procrastination of work.

It will be sunny on Friday, June 28th.

Today, the inspection continues. In the morning, when checking the quality of the main structure of a reinforced concrete frame structure project in the fourth project department, the top floor was being demolished, and it was found that their formwork removal procedure was to dismantle the top bracing of all beams and slabs first, and then dismantle the side formwork of beams and columns. When the inspection team pointed out to them that this was the wrong construction operation method, the carpenters said that they knew it was wrong, but they just wanted to work harder for a while. They have done this many times before, without any problems, and said that they will pay attention in the future. This is mainly because the on-site construction personnel did not make a serious disclosure and did not make a serious inspection during construction, which is very dangerous.

The correct form removal method is to remove the side form of the beam and the template of the column+at least two sides. After dismantling, carefully check the surfaces of beams and columns to confirm that there are no defects that affect the structural safety, such as honeycomb and dog holes. , and then remove the top bracing and all bearing templates.

Although the form removal is a simple process, it also has a certain technical content, and it is also necessary to make disclosure and inspection.

It will be sunny on Tuesday, July 2nd.

Liu, assistant engineer of the project department, will declare the title of engineer this year. He is usually most afraid of writing articles. He said he was afraid of too many dead brain cells. However, the prerequisite for applying for an engineer is to have two published papers, so he is extremely upset and preoccupied these days. Today, he came to ask engineer Zhao for advice, saying that he would be rewarded when he was awarded the title of engineer. Engineer Zhao told him a joke with a smile.

Once upon a time, there was a scholar who didn't work hard. When he tried to write an article before the exam, he thought hard and looked miserable. His wife laughed at him and said, "No matter how painful you are, you can't compare with the pain of our women giving birth!" " The scholar shook his head and said, "Madam, to tell you the truth, it is more painful for me to write an article than for you women to have children." His wife asked inexplicably, "What do you mean?" The scholar said: "when a woman gives birth to a baby, there is a baby in her stomach, but when I write an article, it is out of stock!" "

Engineer Zhao's joke made everyone laugh and I benefited a lot. Never learn from a scholar who has no goods in his stomach. He must study, think and write more at ordinary times.

Can the reinforced concrete pool float?

On Friday, July 5th, it will be sunny with thunderstorms.

In the afternoon, engineer Zhao organizes business study twice a month, mainly to exchange business and technical problems encountered in the past half a month, or to designate special personnel to prepare topics and give special lectures in advance. This form was welcomed by everyone and everyone came to the activity room of the project department early.

In today's activity, the senior engineer of the project department will talk about the anti-floating measures of the reinforced concrete underground pool. A few days ago, there were several reinforced concrete underground pools in the winning paper mill expansion project. Today's lecture by senior engineer is really timely for me, so attention should be paid to prevent the pool from floating during construction.

I don't believe that a pool weighing hundreds of tons, even thousands or tens of thousands of tons, will float after being flooded around. In fact, this is the same reason that a ship can float on the water. I studied Archimedes' principle in physics class in middle school. An object immersed in a liquid will be subjected to upward buoyancy, which is equal to the gravity of the object after removing the liquid. When the buoyancy is greater than the gravity of the object, the object will float. Similarly, when the periphery of the pool is flooded, the pool will be affected by the buoyancy of water. When the buoyancy of water is greater than the gravity of the pool, the pool will float.

Senior engineers explain from both theoretical and experimental aspects. There is a reinforced concrete underground pool, as shown in figure 1, with an outer diameter of 20m, a wall thickness of 40cm, a wall height of 5.6m, a floor thickness of 40cm and a concrete cushion thickness of 10cm. Directly pour concrete on the foundation soil and calculate the depth of floating water in the pool.

According to the calculation, when there is heavy rain or rainstorm, if the height of accumulated water around the pool reaches 2.42 meters, the pool may float.

Senior engineer also made a simple and intuitive experiment. The tools are a washbasin, an open glass bottle, a small ruler and a little water. Gao engineer said that the weight of the glass bottle is 300g, and the outer diameter is 9.5cm. When the glass bottle is immersed in water 1cm, the buoyancy of the bottle is calculated to be 0.7 1n, and the critical water height for the bottle to float is 4.23cm.

1. Put the glass bottle into the washbasin, slowly fill the basin with water, and measure the filling height with a ruler. At the same time, observe the changes of the bottle after soaking in water. At the beginning of water injection, the bottle was very stable and motionless, but when the water injection height reached 4.23cm, the bottle floated.

2. Repeat the test. Firstly, water with a height of 1cm is injected into the bottle, and then the above experiment is repeated. Because there is water in the bottle, the weight has increased. It can be seen that when the water injection height reaches 4.23cm, the bottle remains motionless, and when the water injection height approaches 5.23cm, the bottle begins to float.

Finally, Gao Engineer concluded that the following points should be paid attention to during the construction to prevent the underground pool from floating:

1. After the concrete pouring of the pool wall is completed, it is necessary to pay close attention to the plastering of the external wall and test the water, and complete the backfilling of the peripheral earthwork as soon as possible.

2. When the earthwork is not backfilled, and there is a sudden rainstorm or rainstorm, water should be injected into the pool with a pumping pipe to increase the anti-floating gravity of the pool. When there is a water inlet pipe or a water outlet pipe below the pool, the pipeline should be unblocked, and once there is water outside, it can be injected into the pool in time.

Workers are the wealth of enterprises.

On Saturday, July 6th, it was sunny and the temperature was 32 degrees.

In the evening, the project department held a meeting on heatstroke prevention and cooling, and Manager Qian presided over the meeting. He first asked the leaders of each team to report the heatstroke prevention and cooling situation of each construction site. From the reports of various sites, the degree of attention varies: some sites pay more attention to it, considering from many aspects such as adjusting work and rest time, building a rest shed, preparing enough tea, preparing commonly used health care drugs and corresponding quality and safety technical measures; Some construction sites are poor, and things can be done in a few words. It can be seen that the work is very rough. Mr. Qian finally made a comment, praising the team that valued it and criticizing the team that didn't. In particular, his last few words inspired me very much. He said: "Paying attention to and doing a good job in heatstroke prevention and cooling is not only related to the construction progress, construction quality and safe production, but also related to the relationship between cadres and the masses. Workers are the reliance and wealth of enterprises. Caring for them means caring for the enterprise and caring for ourselves. We must form this kind of knowledge.