technical type

In terms of materials, there is no need to be frugal if the materials can be obtained locally and are sufficient. The wood in the mountains cannot be cut down to build a bridge directly, but it is still possible to use it as firewood. On the outside, there is dry wood that can be ignited inside. After the dry wood burns for a while, the wet wood outside will be dried and can be directly added to the fire to burn.

Of course, it won’t be too dry, and there will still be thick black smoke rising with moisture. As long as you don’t stand in the downwind, it doesn’t matter, and there is no major hindrance.

The pebbles that were burnt into black charcoal seemed to burst when they were pulled out. Many of them had cracks and were no longer the same color and smoothness as before. They were placed on the stone slab beside them and smashed down with a big hammer. Be careful. Just a little bit of strength, just don't hit the stones and splash them.

Occasionally there will be accidents, and small flying stones will hit people's heads and faces, causing scars.

These crushed stones are not easy to stick together with glue. They have edges and corners, which increase the friction and make it difficult for those who want to stick them together. Therefore, all the crushed stones will be laid flat on one In the container, it is a container made of wood. A brick-sized groove is dug in the middle of a piece of wood, and gravel is put in, and gravel of different sizes fills up all the gaps as much as possible, and then Then pour the boiled glue up.

Shellfish glue is translucent, with a certain fishy smell, and the smell is not good, especially when it is boiled, the big iron pot cannot be separated from people, and someone must be there to stir continuously, and then the boiled The glue is quickly poured into the container for processing.

At this time, you can no longer bake it with fire, let the glue dry naturally, and then a piece of gravel brick will be formed. Therefore, the so-called gravel bridge can also be counted as a masonry bridge, because the bedding is still a piece of brick. Bricks, that is, the bricks are made of local materials, which are unavoidably crude, but in terms of sturdiness, they are not weaker than ordinary bricks and stones.

Of course, ordinary bricks still have to be fired. Fortunately, clay can be dug here, which is specially used for firing bricks. Sexy, but also somewhat rough, easy to shape and fire.

Ji Mo is young, so he has no strength to smash rocks, burn stones to move wood, and finally can only make bricks, not to mention, the making of bricks is really like playing with mud, there is no mechanized unity, it is completely independent Made by hand, in order to keep the size of the bricks consistent, container specifications are also used.

Fill the wooden mold with a certain proportion of mixed clay, fill it up and compact it, and then knock it backwards to knock out the brick-shaped clay blocks in the wooden mold, place them on the paved sand, and separate them. After a certain distance, put down another one, and when the bricks on the sand are dry to a certain extent, they are piled up one by one and transported to the cave for firing.

The cave dwelling came here, and it was built first after the stone bridge was determined to be broken. It is not big, and there is no time to wait for it to dry in the shade after it is built. The cracks dried by the fire prevent the brick-burning cave from cracking and leaking.

This method of acceleration is not very good, and the final cave dwelling is extremely clumsy, but this cave dwelling is not expected to be used for a long time, and they will be discarded after use. It is almost a one-time earth kiln, so there is no need to pay too much attention .

The carrying work was done by the brothers again. Looking at the unicorn arms that the brothers generally have, Ji Mo clenched his fist and squeezed the soft flesh on his arm. He had to sigh, there is still a long arm. Way to go.

His posture fell into the eyes of the senior brothers, and the older senior brothers all laughed: "Junior brother, don't worry, take your time, when you grow flesh, you will have strength."

A misconception in ancient times is that the more flesh you have, the more strength you have. The meat here refers to tendon meat, that is, muscle, but the division is not so strict. At least in the eyes of many people, a fat person is a person with strength, whether it is puffy or not. .

People engaged in physical labor eat a lot and work a lot, and it is not easy to get puffy. In their view, muscles grow naturally, and they presumably think that the flesh that everyone grows is this kind of powerful flesh .

"Well, I'm not in a hurry."

Ji Mo responded, during this period of time, he and his seniors really got along day and night, and the wood that was cut down was made into a grass shed, and a group of people slept together, watching the fire or something in turn, and the fire next to it was endless day and night. It won't be too cold to sleep by the fire, but once the smell of smoke turns to the wind direction, it will inevitably choke people.

But this kind of feeling seems to be unique to Ji Mo. The masters and brothers are already used to it. Even if they take a breath of black smoke head-on, they just tilt their heads, so that they won't be choked and coughed.

The food was cooked in the village, and someone was specially hired to make it by the river. Not to mention the big fish and meat, it was a good amount of dry food, which made people eat solidly.

Work like bridge-building may be a bit new if you haven’t seen it before. People often come to watch the excitement. Under the sun, it can’t be covered. Anyone can see what they are doing at a glance, but there are technical things in it. For example, how much heat is required to burn bricks, how long does it take to burn well, and to what extent can they be used? It is not easy to understand.

So, don't be afraid of people watching.

Master Ji is not very good at writing, he can only understand a few words, including his own name, and he can't draw pictures, so there is no design drawing for the bridge, everything is in his head, and he will give it to the disciple who is driving the pile later. Say where to start, how deep to drill, and then tell the stone burner how many broken stones and bricks you need, and then check whether the shellfish glue is sticky enough, and whether you need to add other things like gum. of……

Back and forth, the audience ran wild, looking like a busy man.

Apart from helping to press the adobes, Ji Mo followed Master Ji around like a little overseer, listening to Master Ji pointing out this and that. It was not the first time he and Master Ji got along. I also heard from Ge Gen that when working on the bridge construction site, Master Ji didn't like to explain the reasons for each step.

Firstly, it may be that there are too many people who are worried about watching, and there are too many people, and if people are passively learning, it is also my own carelessness; secondly, there is some truth, and Master Ji may not understand it so well, but it is the experience of generations. He played it according to local conditions, as if many designers design clothing with some customary elements, which may not really be able to give a specific meaning.

Whenever he arranges things and asks why he did it this way instead of that way, in Master Ji's view, it's picking things up. If you are asked to do it, you can do it. If you want to learn it, why are there so many nonsense!

Therefore, except for one or two small chats and the enthusiastic shouting of slogans when exerting strength, no one talked about technical matters, and more and more laymen could only watch the excitement and experience what it means to be interlaced like a mountain.

Ji Mo is not ignorant. Before coming here, he was studying with Master Ji, and Ge Gen, a senior who is about to change careers, knows everything. He can still understand some things, such as Talk about piling that Master Ji values.

Judging from the width of the river and the turbulence of the water flow, it is impossible to set up bridge piers in the middle. Then, the abutments on both sides of the river are the most important, just like building a house requires laying foundations. Now the bridge is built by piling. platform base.

The length of the arch bridge, which seems to span much, may be two-thirds or one-half of the entire bridge length, and the arched part that actually spans the water surface may be two-thirds or one-half of the entire bridge length. The part where the bridge connects with the road surface is also where the abutments of the bridge piers on both banks are located.

The weight of the bridge span structure of the arch bridge will also be transmitted to the foundation of this part through the arch surface, so this is the most important thing here. If the head is not opened well, no matter how well the arch in the middle is done, it will be very difficult. easy to collapse.

However, the soil quality of this river bank is not good enough. To make it stronger, it is inevitable to place several more piles and fix them repeatedly. Here is also the bulk of the stone, which is not strong enough to fill in the stone. The things built on it , is bound to be easily shaken.

This is also the only place where local materials cannot be obtained locally. Better stone materials must be shipped in from a distance. Fortunately, the demand is not much, and the stones after simple processing are not expensive. You can transport it yourself, and you can save some.

However, even if it is frugal and convenient everywhere, the time required is not short. When the stones are actually filled into the ground and become the abutment, all the required bricks are fired, and there are also that kind of crushed stone bricks, and some others The necessary wood is also ready.

The difference between the bridge piers on both sides is only a day or two. After the completion, they will be built from both ends, and finally connected in the middle. On the first line, there will be no skewed mistakes.

There are also data such as width, narrowness, length and height, which are also hidden in his heart, and he does not explain them to the public. Ji Mo only learned a general idea later. Looking at the scene at this moment, he can only convert it into his own data and make records. , barely mastered a point of knowledge.

Before the construction on both sides started at the same time, piles were also built in the river. They were wooden piles. The brothers with good water skills led the villagers to plunge one end of the wood into the deep water. , a rope is tied around the waist, pulled by the people on the bank, and when one person is exhausted, another person will come. In short, find a way to make the stake stand, and then try to stabilize it. This is a bracket.

Even if it is an empty-bellied stone arch bridge, there must be a support first, otherwise, if you expect to stick one brick and then step on this brick to stick another one, just stick the bricks to the middle and connect the two ends one by one, I am afraid that it will not be possible position, the arch is about to collapse first.

Therefore, there must be a support. With the support as a proof, many people start working at the same time. After the bridge is built, the support should be kept for a period of time. After the masonry is completely solidified, no repairs are needed, and then it can be removed.

It seems useless, but it is also an inevitable process.