The director's high-rise residential building project at No.2 Jingba Road, Jinan Railway Bureau is located in No.2 Jingba Road, south of the east end of Jingba Road, with two floors underground and twenty-two floors above ground. The second floor underground is a civil air defense basement with a height of 4.5m；; The basement is a garage with a height of 3.6m；: The first and second floors above the ground are commercial buildings, and some are equipment rooms. The first floor is 4 m high and the second floor is 5.3 m high. The third to twenty-second floors are all residential, with a height of 2.8m；; The top tower (23rd floor) is an equipment floor with a height of 4.2m；: The total construction area of this project is

47,185 ㎡, and the eastern part of this tender has a construction area of

23,592 ㎡, of which the above-ground construction area is

19,589 ㎡ and the underground construction area is

4,113 ㎡; The total height of outdoor buildings above the ground is

71.11 m.

the foundation of this project is C41 reinforced concrete bored pile and then grouted to moderately weathered diorite, C41 concrete bearing platform foundation and water retaining floor; The design grade of foundation is Grade B.. Structural form: the basement and the first and second floors are frame-supported structures, and more than three floors are transformed into shear wall structures through the transfer floor of the second floor. Elevation

-8.81m ~ 9.21m frame pillars, frame columns and shear walls are made of C45 concrete, and frame beams and cast-in-place slabs are made of C41 concrete; C41 concrete is used for elevation 9.21m～ 37.22m, and C31 concrete is used for elevation above 37.22m..

this project is a kind of high-rise residential building with a design service life of

111 years; Seismic fortification is 6 degrees, and the safety level is considered as Grade II; Site category is Class II, civil air defense level is Class VI, seismic fortification level is Class C, and fire resistance level is Class I.. Frame-supported frames with an elevation below -3.7m are Grade III, and those with an elevation above -3.7m are Grade II; The shear wall below elevation 14.82m is Grade III, and the shear wall above elevation 14.82m is Grade IV. The basement exterior wall is 411 thick impervious reinforced concrete; The shear walls on the first and second floors are 411-thick reinforced concrete external walls, and some external walls are filled with 251-thick aerated concrete blocks; More than three shear walls are reinforced concrete with a thickness of 251 ~ 211; The internal partition wall is filled with aerated concrete blocks with thickness of 1.21 and 211.

The external wall insulation system of 41-thick extruded polystyrene insulation board is adopted for the public part of this project, and the external wall insulation system of 41-thick rigid foamed polyurethane insulation board is adopted for the external wall of residential part; Non-heating stairwells, forerooms, elevators, walkways and partition walls of heating rooms shall be plastered with 21mm thick rubber powder polystyrene particle thermal insulation mortar; The bathroom is tiled with walls, and other interior walls are plastered with mixed mortar and brushed with latex paint; The floor of the building is made of fine stone concrete except the bathroom, the first floor lobby and the elevator room. Roof insulation flat roof, rigid foamed polyurethane insulation board

45 thick, and the waterproof rating of the roof is II

; Window double-layer vacuum glass aluminum alloy window; Household doors are made of metal doors with anti-theft, thermal insulation and sound insulation properties, lined with 15mm thick glass wool or

18 thick rock wool board, balcony doors are aluminum alloy energy-saving sliding doors, interior doors are plywood doors, access doors and pipeline well doors are all made of fire doors, and unit doors are visual intercom doors.

this project is equipped with three

master-passenger elevators.

water supply and drainage and fire fighting works:

The water supply and drainage pipeline system is equipped with domestic water supply system, domestic sewage system, reclaimed water system, rainwater system, fire hydrant water supply system and automatic sprinkler system.

the domestic water supply system is divided into three areas: the public buildings on the second floor and below are low areas, which are directly supplied by the outdoor municipal water supply network; The third floor to the twelfth floor is the central area, and the thirteenth floor to the twenty-second floor is the high area. The middle and high areas are directly supplied with water by the pressurization and steady flow equipment without negative pressure pipe network. The pressurized water supply equipment adopts variable frequency speed regulating unit, with the maximum daily water consumption of residential part < P > 1.41m3/d, the maximum hourly water consumption of 14.6

m3/h, the maximum daily water consumption of public part * * * 25m3/d and the maximum hourly water consumption of 2.8m3/h.. The horizontal main pipe and vertical pipe of domestic water supply adopt steel-plastic composite pipe, and the branch pipe adopts PPR pipe.

balcony washing wastewater is discharged separately, collected and treated with reclaimed water for reuse; Other sewage and wastewater are treated by septic tank and discharged into municipal sewage pipeline. The reclaimed water treatment station is located on the second floor underground in the east section. The sewage and waste water pipes adopt centrifugal casting anti-seismic flexible interface drainage pipes.

there are two ways of water supply in this project, one from the municipal

DN151 water supply pipeline and the other from the DN151 water supply main pipe of the former railway hospital. A 511 cubic fire pool is set outdoors. Fire hydrant water supply system is designed according to high-rise civil buildings, with indoor fire hydrant water consumption of 41L/s and outdoor fire hydrant water consumption of 31l/s.. The fire pump house on the second floor underground in the west section is equipped with two fire hydrant water supply pressurized pumps and one 18 cubic fire water tank between roof water tanks. The water supply network of indoor special fire hydrant is vertically divided into high area (13th floor to 22nd floor) and low area (2nd floor to 12th floor below). In this project, the commercial building, garage and basement are equipped with automatic sprinkler system. The garage is designed according to the middle risk level II, and the second floor underground is designed according to the warehouse risk level I. The fire extinguishing water consumption is

31l/s. Fire hydrant water supply pipe adopts hot-dip galvanized steel pipe, and the working pressure of the pipe is 1.6KPa.

HVAC project:

The residential heating system in this project is an independent household metering system with vertical pipes, the third to twelfth floors are low-rise systems, and the thirteenth to twenty-second floors are high-rise systems; The water supply form of riser is different layer type with lower supply and lower return. Hot water with return water temperature

85/61℃ is supplied for heating, and the heating heat source is provided by the heat exchange station on the second floor underground in the west section; Radiator surface mounted.

The indoor system is divided into two pipes, and the return pipe is arranged in the cushion under the ground of this building. In the cushion, polybutylene pipes (

PB pipes) are used, and the main water supply and return pipes are laid without gradient, and the branch pipes connecting the radiator out of the ground are made of hot-dip galvanized steel pipes. The heating system of the male * * part is a double-pipe single-pass system, and the main water supply and return pipes are laid in the next ceiling.

the elevator machine room is equipped with cold and warm split air conditioning.

The kitchen and bathroom of residents are equipped with the exhaust shaft of the main and secondary air ducts, and the power socket of the exhaust fan is reserved; Mechanical ventilation system is set up in the power distribution room on the second floor underground in the west section, the heat exchange station and the reclaimed water equipment room in the east section, which is used together with the smoke exhaust system; The elevator machine room is equipped with a shaft circulation fan.

in this project, the smoke prevention stairwell and the shared front room are provided with mechanical pressurized air supply system to prevent smoke, and each floor of the front room is provided with a normally closed multi-leaf air supply outlet, which can be opened manually or

DC24V. In case of fire, the pressurized air outlets on the fire floor and the adjacent upper and lower floors are opened at the same time, and signals are output to the fire control room, and the fire control room outputs signals to turn on the pressurized fan. The smoke-proof stairwell is provided with a normally open and self-hanging louver air supply outlet. In case of fire, it can be controlled by the smoke sensor, or the fire control room can remotely turn on the pressurized fan, and all the air outlets can be opened to supply pressurized air to the stairs.

The underground garage is equipped with a mechanical smoke exhaust system and ventilation at ordinary times, and adopts a silencing fire smoke exhaust fan and a normally open smoke exhaust valve and port. Ventilation at ordinary times and smoke exhaust in case of fire. When the smoke exhaust temperature is greater than

281℃, the fire-fighting linkage closes the blower and exhaust fan and all smoke exhaust valves, and the air is supplemented by the driveway.

the civil air defense on the second floor underground is usually equipped with mechanical smoke exhaust. It is divided into two smoke-proof areas, and another mechanical air supply system is set up, using silencing fire smoke exhaust fan and normally open plate smoke exhaust port. When the fire is confirmed by the control center, the smoke exhaust fan will operate, and at the same time, the air supply system will pressurize and make up the air. When the smoke temperature reaches

71℃, the fan will stop, and when the smoke temperature reaches 281℃, the smoke exhaust valve will be closed and the smoke exhaust fan will stop.

the underground second-floor pump room, power distribution room and other rooms are equipped with exhaust system, and the corridor is equipped with mechanical smoke exhaust system. The two-speed fire smoke exhaust fan of the system usually runs at low speed for ventilation; When there is a fire in a room, the fan of the system runs at high speed.

electrical engineering:

the electrical engineering of this project includes:

11KV and 221/381V high and low voltage distribution systems, lighting system in the building, lightning protection and grounding system and safety measures of the building, automatic fire alarm and remote transmission system of reserved meter data.

this project is a kind of high-rise residential building. the load of fire-fighting electrical equipment such as fire pump, spray pump, automatic fire alarm and fire linkage control is level I, the load of residential public lighting, water pump and elevator is level II, and the other loads are level III.

the power supply of this project adopts two

11KV high-voltage power supplies, and a low-voltage distribution room is set on the second floor underground. The two power supplies operate in sections. When the two power supplies work at the same time, they are standby power supplies for each other, and each power supply can bear all primary and secondary loads. The power supply is introduced into the underground second floor by cable lines through pipes and buried, and a low-voltage distribution room is set up. The distribution cabinets in the low-voltage distribution room are installed in a single row away from the wall. The standard of residential electricity consumption is

8Kw per household, and the residential trunk line adopts 411A enclosed bus with distribution room leading out and adopts trunk distribution along the power shaft; Some distribution boxes in the shopping mall are located in the power shaft on the first and second floors respectively, and the total meters of households on the third to 22nd floors are located in each floor respectively, and the power load is supplied by radiation. * * * rooms such as garage, equipment room and first floor office mainly use fluorescent lamps and ordinary energy-saving lamps; In the residential part, except for the kitchen and bathroom, which are moisture-proof lamps, the rest are reserved with lamp openings.

this project belongs to the second-class lightning protection building. The roof adopts 11

galvanized round steel lightning protection belt, and the grid of lightning connection lines on the roof wall is not more than

11m× 11m. Two vertical long steel bars above φ 16

in the reinforced concrete column or shear wall are used as down lead, and the upper end of the down lead is welded with the lightning protection belt, and the lower end is welded with the two main bars of the upper and lower steel mesh on the axis of the foundation slab. Starting from the first floor, equalizing rings are set every three floors; The equalizing ring is formed by welding two main bars

φ 16 or above in the floor beam.

The scope of this project is the first-class protection object of the automatic fire alarm system, and the centralized alarm system is adopted. The system consists of: dual-power switching power supply for fire fighting equipment, automatic fire alarm system, fire fighting linkage control system, audible and visual alarm, fire emergency lighting evacuation indication system and special telephone system for fire fighting.

Weak current engineering:

Weak current engineering mainly includes: telephone system, cable TV system, computer network system, building visual intercom system, TV monitoring system and outdoor communication civil engineering.

The main bedroom, bedroom, living room and bathroom of each household in the building are provided with telephone outlet sockets, and the telephone system in the building is configured by dual systems, with

31P telephone junction boxes every two floors. 211P telephone junction box is set in the weak current mechanical room on the first floor.

Cable TV outlet sockets are reserved in the master bedroom, bedroom and living room of each household in the building. Cable TV front-end boxes are installed on the first, seventh, fifteenth and nineteenth floors of the building, and cable TV system junction boxes are set on each floor.

computer network sockets are reserved in the master bedroom, bedroom and living room of each household in the building, and network switches are set every two floors in the weak current well.

a 24-port building distribution frame and a three-layer network switch are installed in the weak current machinery room on the first floor, and multimode optical cables are used for the switches on each floor.

this project will install an independent building video intercom system, and each household in the building will install a video intercom extension, and a door machine will be installed at the entrance of the residence.

the TV monitoring system of this project adopts "multi-head and multi-tail" cascade control mode, and the property management and monitoring room is equipped with a TV monitoring main system, and monitoring cameras are installed around floors, elevators and buildings.

6-hole plastic communication pipes are laid outdoors around the building.

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) Estimated total investment of the main building project: about

51 million yuan

5

) Construction and design unit:

Construction unit: Jinan Railway Bureau Staff Residence Construction Headquarters

Design unit: China Railway Jinan Survey and Design Consulting Institute Co., Ltd.

Survey unit: Jinan Survey and Mapping Research Institute

Current director building.