With the development of medical and health undertakings, people's awareness of medical and health care is increasing. People also put forward higher requirements on medical level and medical environment, which prompts more and more old hospitals to be rebuilt and expanded to meet the growing needs of people. However, while renewing and expanding the functions of hospital buildings, it is necessary to minimize the impact on the existing medical work and ensure the normal operation of the hospital.
Hospital reconstruction and expansion is the focus of hospital construction in the new period of our country. This paper discusses the design concept of hospital expansion by analyzing the characteristics and trends of current hospital construction and starting with the mode of hospital reconstruction and expansion.
Trend of Hospital Reconstruction and Expansion
1. Integration. In the reconstruction and expansion of the hospital, we should consider the needs of hospital operation as a whole, arrange medical equipment reasonably, plan the flow of people, logistics and vehicles reasonably, and realize the convenient and efficient work flow to meet the corresponding social functions.
2. High-level. After leaving enough green space and patient's rest and activity space, the high-level reconstruction and expansion of the hospital concentrates many functions on the high-rise buildings. High-rise is an effective way for hospitals to save land, optimize environment, improve facilities, avoid decentralized layout of buildings and reduce energy consumption.
3. Intelligence. It refers to the combination of building automation (BA), communication automation (CA) and office automation (OA), so that the hospital has a highly integrated management function, and achieves high efficiency, high function and high comfort.
Design Concept of Hospital Expansion
1. Overall Planning and Rational Distribution

Traditional hospital design can no longer meet the requirements of social development and people's needs. Therefore, in the reconstruction and expansion of hospitals, it is necessary to rationally layout functional areas and reduce the distance between relevant functional departments, so as to facilitate patients, shorten the engineering pipeline in the hospital area, so as to reduce energy consumption and save energy. The reconstruction and expansion of hospitals is guided by the general plan. It is to improve the efficient and integral connection between outpatient, inpatient, medical technology and logistic supply, to construct a smooth medical traffic flow, and to expand the practice of medical empty space. The following issues should be paid attention to in the overall planning:

1) Planning and construction of parking lots. Automobile is a tool for some people to work and live. Hospital is a public place and must have a parking lot of a certain scale. In the future, the number of outpatient clinics will largely depend on the number of parking spaces. In the construction of hospitals, we should make full use of space and underground to build parking lots.
2) Planning and construction of special traffic routes. In order to standardize the traffic sequence of hospitals, special traffic routes should be designed to prevent cross-infection in hospitals. The special route for doctors is the road for doctors to work, live and study; the special route for motor vehicles is the special route for parking vehicles for outpatients, inpatients and visitors through parking lots; the special route for medical personnel is the special route for outpatients, inpatients and visitors; the special route for sewage and Taiping is to prevent the sense of intersection in hospitals. Special routes for dyeing and transporting dead bodies are set up to cause panic.
3) Scientific and rational planning of the hospital's functional areas is the key to hospital reconstruction. Establishing reasonable functional areas, coordinating the building links of outpatient, medical technology and hospitalization, shortening the distance, smoothing the access, facilitating management, treatment, sharing medical resources, and improving the utilization rate of medical resources.
2. Creating a Humanized Medical Space Environment
As Tadao Ando said, "We should not only attach importance to the artistry of single buildings, but also think about design from the perspective of building a high quality environment. The hospital buildings built in the past in our country often make people feel that the hospital is cold and rigid. The hospital design that used to be completely "function-centered" can no longer meet the social needs. The emergence of bio-psycho-social medical model has caused the change of hospital functions. It emphasizes "people-centered" and pays attention to the process of various groups of people in the hospital. Psychological feelings. Medical environment has an impact on patients'psychology, physiology and effect during treatment. Therefore, both indoor and outdoor space environment in hospitals should fully respect patients' living habits and psychological state, so as to create an acceptable environment.
For example, on the premise of satisfying the boundary retreat, fire-fighting corridor and internal parking, the green space should be set aside to the maximum extent, with the original green space, beautify the image of the hospital area, add human sentiment, and create the friendly emotional space of the hospital; the garden planning and construction can also be carried out in the light of the actual situation of the hospital, making full use of the beautiful landscape planning. Reflect the humanistic care and comfortable space feeling of modern hospital, bring patients good experience of seeing a doctor and recuperation.
3. Embodiment of Green Sustainable Development Concept
Architectural design should consider patients in an all-round way, especially the allocation of facilities used in hospitals, paying attention to the details of the design of the places where patients go can bring convenience and warmth to patients, while protecting patients'privacy, creating safe and efficient medical space, which is also the body of humanization and sustainable development. Now.
In the reconstruction and expansion of hospitals, where the ground of the original site can be reused, it should be renovated and utilized again in order to achieve the purpose of saving. For example, the original terrazzo ground can be reused in other unimportant spaces and be repaired and renovated. In the use of materials, high refractory grade, easy to clean, easy to replace the main, easy to use in the future.
Regardless of the newly-built hospital or the renovation and expansion of the hospital, it is necessary to take people as the basic starting point, take the long-term development strategic vision, improve the overall layout of the hospital to carry out hospital planning and design, and strive to create a safe, warm, comfortable, clean, natural and ecological space environment to meet the needs of the times for the medical environment. The requirements of circumstances.
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