The application and benefits of isosceles triangle in ancient buildings in China, it is best to have pictures of these buildings.

The biggest advantage is relative stability.

China is one of the ancient civilizations in the world. China ancient architecture, Egyptian ancient architecture, West Asia ancient architecture, Indian ancient architecture, Aegean ancient architecture and American ancient architecture are six major components of ancient architecture in the world. China architectural culture has a long history and developed independently, forming a unique architectural system. The characteristics of ancient architecture in China are mainly manifested in the following seven aspects:

1, with wood as the main building material, wooden columns and beams as the load-bearing skeleton, and wood, soil or other materials as the enclosure.

2. Maintain the principle of frame system. In ancient China, the wooden structure building system with wooden columns and beams as load-bearing skeleton and wood or other materials as enclosure was essentially a frame system with load-bearing structure separated from enclosure structure.

3. Create and use the bucket arch structure. Bucket arch is a unique shape in the ancient architectural system of China. It is not only a structural component that transfers load between the upper beam and the column, but also a main decorative component of the building with its beautiful and gorgeous shape. It is a unique part of China's architectural system, integrating structural and decorative functions.

4. Standardize single buildings. China's ancient buildings, whether palaces, temples, houses, etc. Regardless of the size, it consists of three parts: platform, roof and roof.

1, pay attention to the layout of buildings.

Most of the ancient buildings in China are composed of courtyards: single buildings are arranged along the periphery and enclose the middle courtyards. The overall style of this courtyard is introverted: the interior is open and changeable, and the appearance is closed. According to China's feudal etiquette concept, the courtyard emphasizes the symmetrical layout of the central axis to highlight the main building and achieve overall balance.

Multi-level jumping layout along the axis has become a prominent feature of ancient buildings in China, and the courtyard changes are rich and colorful, which makes up for the monotony caused by the monotonous single building to some extent. This method of building group combination even affects urban planning and has made brilliant achievements.

Only landscape architecture is an exception. The garden architecture in China is based on the principle of "learning from nature", which is extremely free and flexible, and it is completely different from the geometric pattern garden architecture layout in Europe.

6. Flexible arrangement of spatial layout.

The frame structure creates conditions for the flexible layout of indoor space. In ancient buildings in China, various covers, curtains, partitions and screens are often used to divide indoor space freely and flexibly.

7. Use colorful decorations.

A prominent disadvantage of wooden frames is that they are perishable and flammable. In order to protect the wood, the surface needs painting. In the long-term development and evolution, China ancient architecture has formed a unique color painting system, which amazed the world.

Main types and types of ancient architecture in China.

First, the main forms of ancient wooden structures in China

(a), lifting beam frame (also known as "stoplogs")

The lifting beam frame is a set of beam frames, which are erected on the columns on the abutment along the depth direction of the house. There are short columns on the beams and short beams on the short columns, so that several layers are stacked, and then the ridge melon columns are erected on the top floor.

Between two adjacent groups of beam frames, the two groups of beam frames are combined by a horizontal connector "square" perpendicular to the beam frame direction and located at the upper part of the column. At both ends of each beam, purlins are placed perpendicular to the beam frame. Purlins not only strengthen the horizontal connection between beams and frames, but also bear the load of the upper roof.

Beam-lifting frames are widely used in ancient buildings in China, especially in northern China. This is because the hanging beam type can make fewer columns or even no columns indoors. However, the girder lifting frame uses a lot of materials and consumes a lot of wood. Moreover, this kind of frame basically does not adopt triangle, the most stable component combination form, so its stability is poor.

(2), wear bucket structure

The barrel frame is directly supported by the landing columns with dense column spacing and small diameter (or alternately arranged with short columns that do not land). There is no beam between the columns along the depth direction of the house, but a kind of "penetrating" wood is used to form the bent frame of the columns, and the eaves are carried by the angle ruler. The bent frame and the bent frame are horizontally connected with the bucket purlin through fibers. This frame saves wood because it uses smaller wood; Because of the dense column spacing, it has good wind resistance as a gable. However, the dense column spacing makes the indoor space narrow. So many buildings often use the hanging beam frame in the middle of the building to expand the indoor space; On the gable at both ends, a bucket-piercing frame is adopted to improve the wind resistance. Barrel frame is mainly used in southern China. But it has a long history, at least in the Han Dynasty.

(3) Well stem structure

This is a structure without columns and beams. The dry structure of the well is made of logs or wood with a square, rectangular or hexagonal cross section. The two ends of the wood cross and bite at the corner to form a wall frame, and then short columns are erected on the wall frame at both ends to support ridge purlins.

The tombs of Shang Dynasty in China adopted the well-trunk structure. This structure consumes a lot of wood, and the absolute size of the building is limited. At present, it is only used in forest areas.