【建筑模板(ban)】什么是建筑模板(ban) 建筑模板(ban)種類(lei)有哪些
一、什么是建筑模板
建(jian)(jian)筑(zhu)模板(ban)是(shi)一(yi)種(zhong)臨時性(xing)支護結構,按設計要求制作(zuo),使混凝土結構、構件按規定的位(wei)置、幾何尺寸(cun)成(cheng)形,保(bao)持其正確位(wei)置,并承(cheng)受(shou)建(jian)(jian)筑(zhu)模板(ban)自重及作(zuo)用在其上的外部(bu)荷(he)載。進(jin)行模板(ban)工程的目(mu)的,是(shi)保(bao)證(zheng)混凝土工程質量與施(shi)工安全、加快施(shi)工進(jin)度和(he)降低工程成(cheng)本。
二、建筑模板的組成部件
現澆混凝土結構工程施工用的建(jian)筑模板結構,主要由面板、支撐結構和連接件(jian)三部分組(zu)成。
1、面板是直接接觸新澆(jiao)混凝土的承(cheng)力板;
2、支撐結構(gou)則(ze)是支承面板、混凝土和施工(gong)荷載的臨時(shi)結構(gou),保(bao)證(zheng)建(jian)筑模板結構(gou)牢固地組合,做到不變形、不破(po)壞;
3、連接件(jian)是(shi)將面板與支撐結構(gou)連接成整體(ti)的配件(jian)。
三、建筑模板的分類
(一)按材料分類
模(mo)板按所用的材料(liao)不同,分為木模(mo)板、鋼木模(mo)板、鋼模(mo)板、鋼竹模(mo)板、膠合(he)板模(mo)板、塑料(liao)模(mo)板、玻璃鋼模(mo)板、鋁(lv)合(he)金模(mo)板等。
1、木(mu)(mu)模(mo)板(ban)(ban)的樹種可按(an)各地區實際情(qing)況選用(yong)(yong),一(yi)般(ban)多(duo)為松木(mu)(mu)和(he)杉(shan)木(mu)(mu)。由(you)于(yu)木(mu)(mu)模(mo)板(ban)(ban)木(mu)(mu)材(cai)(cai)消耗(hao)量大、重復(fu)使(shi)用(yong)(yong)率低,為節(jie)約木(mu)(mu)材(cai)(cai),在現澆鋼(gang)(gang)筋混凝(ning)土(tu)結構中應(ying)盡量少用(yong)(yong)或不用(yong)(yong)木(mu)(mu)模(mo)板(ban)(ban)。 鋼(gang)(gang)木(mu)(mu)模(mo)板(ban)(ban)是(shi)以(yi)角鋼(gang)(gang)為邊框,以(yi)木(mu)(mu)板(ban)(ban)作面(mian)板(ban)(ban)的定型(xing)模(mo)板(ban)(ban),其優(you)點是(shi)可以(yi)充(chong)分利用(yong)(yong)短(duan)木(mu)(mu)料并能多(duo)次周轉(zhuan)使(shi)用(yong)(yong);
2、膠合板(ban)(ban)(ban)(ban)(ban)模(mo)板(ban)(ban)(ban)(ban)(ban)是(shi)以(yi)膠合板(ban)(ban)(ban)(ban)(ban)為面板(ban)(ban)(ban)(ban)(ban),角鋼為邊框(kuang)的(de)定(ding)(ding)型模(mo)板(ban)(ban)(ban)(ban)(ban)。以(yi)膠合板(ban)(ban)(ban)(ban)(ban)為面板(ban)(ban)(ban)(ban)(ban),克服了(le)木材的(de)不(bu)等方向性的(de)缺點,受力(li)性能(neng)好。這(zhe)種(zhong)(zhong)模(mo)板(ban)(ban)(ban)(ban)(ban)具(ju)有強度高、自重小、不(bu)翹曲、不(bu)開裂及板(ban)(ban)(ban)(ban)(ban)幅大、接縫少的(de)優點。鋼竹模(mo)板(ban)(ban)(ban)(ban)(ban)是(shi)以(yi)角鋼為邊框(kuang),以(yi)竹編膠合板(ban)(ban)(ban)(ban)(ban)為面板(ban)(ban)(ban)(ban)(ban)的(de)定(ding)(ding)型板(ban)(ban)(ban)(ban)(ban)。這(zhe)種(zhong)(zhong)模(mo)板(ban)(ban)(ban)(ban)(ban)剛度較大、不(bu)易變形、重量輕、操作方便(bian);
3、鋼模板(ban)一般均做成(cheng)定型模板(ban),用(yong)連接構件(jian)拼裝成(cheng)各種形狀和(he)尺寸(cun),適用(yong)于多種結構形式,在(zai)現澆鋼筋混凝土(tu)結構施工(gong)中(zhong)廣泛應用(yong)。鋼模板(ban)一次投資量大,但周轉率(lv)高,在(zai)使(shi)用(yong)過程中(zhong)應注意保管和(he)維護、防止生(sheng)銹以延長鋼模板(ban)的使(shi)用(yong)壽命;
4、塑(su)料模板(ban)、玻璃(li)鋼(gang)模板(ban)、鋁合金(jin)模板(ban)具有重量輕、剛度大、拼裝方便、周轉率高的特點,但(dan)由于造(zao)價較高,在施工(gong)中尚未普(pu)遍使用。
(二)按結構類型分類
各種(zhong)現澆鋼筋混凝土結(jie)構(gou)構(gou)件,由(you)于(yu)其形狀、尺寸、構(gou)造(zao)(zao)不同,模(mo)板(ban)(ban)(ban)(ban)的(de)(de)構(gou)造(zao)(zao)及組裝(zhuang)方法也(ye)不同,形成各自的(de)(de)特點。按(an)結(jie)構(gou)的(de)(de)類(lei)型模(mo)板(ban)(ban)(ban)(ban)分(fen)為:基礎模(mo)板(ban)(ban)(ban)(ban)、柱模(mo)板(ban)(ban)(ban)(ban)、梁模(mo)板(ban)(ban)(ban)(ban)、樓(lou)板(ban)(ban)(ban)(ban)模(mo)板(ban)(ban)(ban)(ban)、樓(lou)梯模(mo)板(ban)(ban)(ban)(ban)、墻(qiang)模(mo)板(ban)(ban)(ban)(ban)、殼模(mo)板(ban)(ban)(ban)(ban)、煙囪模(mo)板(ban)(ban)(ban)(ban)等多種(zhong)。
(三)按施工方法分類
1、現場(chang)裝拆式模板
在施(shi)工現(xian)場按照設計要求(qiu)的(de)結構形狀,尺寸及空間(jian)位置現(xian)場組裝的(de)模(mo)板(ban)(ban),當混凝土(tu)達到拆模(mo)強度后拆除模(mo)板(ban)(ban)。現(xian)場裝拆式(shi)模(mo)板(ban)(ban)多用定形模(mo)板(ban)(ban)和工具式(shi)支撐;
2、固定式模板
制作預(yu)制構件用的模(mo)板(ban)。按照構件的形狀(zhuang)、尺寸(cun)在(zai)現場(chang)或預(yu)制廠制作模(mo)板(ban)。各種胎(tai)模(mo)(土胎(tai)模(mo)、磚(zhuan)胎(tai)模(mo)、混凝土胎(tai)模(mo))即屬固定式模(mo)板(ban);
3、移動式模板
隨著混(hun)凝(ning)土(tu)的(de)澆(jiao)(jiao)(jiao)筑(zhu),模板可沿(yan)垂直方(fang)(fang)向或(huo)水平方(fang)(fang)向移動(dong),稱為移動(dong)式(shi)(shi)模板。如煙囪、水塔、墻柱(zhu)混(hun)凝(ning)土(tu)澆(jiao)(jiao)(jiao)筑(zhu)時采(cai)用的(de)滑升模板、提升模板和(he)筒殼澆(jiao)(jiao)(jiao)筑(zhu)混(hun)凝(ning)土(tu)時采(cai)用的(de)水平移動(dong)式(shi)(shi)模板等。