(8)室外消火栓系统:该设计中的室外消火栓主要通过市政管网直接供水,可以在建设中使用一下枝状管网的形式,并且在会议综合楼总布局的最大对角线上,设置2个室外的,地上式的,SS100/65型型号的消火栓。
室内消火栓:考虑到该会议综合楼的整体体积较大,面积较大,因此选用喷口的直径为19mm的水枪,之后衬胶水带根据要求和规范选择用为65mm的直径。因为室内消火栓的保护半径均为28.1m,因为只能靠墙排布,因此靠墙的消火栓间距为16.86m,两个不靠墙的相邻的消火栓排布间距为22.4m,整幢楼一共需要排布6根立管。
消防水箱容积设计为18m³,消防水池的有效容积取498.312m³,消防水泵扬程为77m,流量为55.46L/s。
(9)自动喷水灭火系统采用湿式自动喷水灭火系统,火灾危险等级为中危险级Ⅰ级。喷水系统的喷头间距为3.5m。每个喷头的实际保护距离为12.25㎡,系统的设计流量为1377.41L/min。
(10)防排烟设计:出于实际的需要,应该采用结合自然排烟和机械排烟两种方式一起运作的工程设计方案。地上一层、地上二层以及地上三层、因为满足自然排烟的要求,所以每一层的所有房间、每一层楼(包括夹层部分)的所有楼梯间、所有的合用前室、所有的疏散走道全部不外设系统,通过出口及四周窗户进行自然通风。
地下部分必须全部使用机械排烟,在不跨越防火分区的情况下,将地下一层分为4个防烟分区。系统最大排烟量114080.4m³/h。补风系统的补风量不得小于57040.2m³/h。排烟风机选用离心式风机,并选择风管直径或边长尺寸在1220-1250mm之间的矩形风管。
(11)火灾自动报警系统采用集中报警系统,并在建筑的地上一层设置一个消防安保控制中心。地下一层、地上二层、地上三层选用感烟探测器,地上一层选用感温探测器。
地下一层需要69个感烟火灾探测器,地上一层需要193个感温火灾探测器,二层需要64个感烟火灾探测器,三层需要17个感烟火灾探测器。
关键词:会议综合楼;消防设计;安全;建筑消防;火灾
A conference comprehensive building fire design
Abstract: This project is a conference comprehensive building project of a city’s training school. The school has a planned base area of 33,333 ㎡ and a planned total construction area of 44,120.74 ㎡. The underground area is 10456.57 ㎡, and the above-ground construction area is 33664.17 ㎡.
Among them, the conference comprehensive building is a multi-storey comprehensive building, one underground floor and three floors above ground. The building area is 10,162.17
㎡, the underground construction area is 3,270.96 ㎡, the above-ground building area is
6,891.21 ㎡, the building height is 19.25 meters, the engineering design service life is 50 years. When designing a fire protection building for a conference comprehensive building, it is necessary to pay attention to the following: The fire protection design of the building must not only adhere to the requirements of the fire protection code and ensure the safety, but also be flexible and in line with the specific reality of the project, so that it is safe, reliable, scientific
and reasonable, economical and practical.
The specific design is as follows:
(1) The building height of the conference complex is 19.25m. It is a multi-storey residential building , an important public building. Its fire resistance rating is Grade II.
(2) The distance between the conference comprehensive building, the talented apartment 4#, and the Reality Pavilion the teaching building, meets the requirements of firep spacing. Therefore, there is no need for additional design.