The utility model relates to the expansion of the anchorage supporting device is a geotechnical engineering, which comprises a rod body, the outer support block, outer supporting sleeve, sponge supporting body, nail, drill top block, the cover and the locking nut, the rod body and the outer supporting block is connected, the outer supporting block and the outer support is connected together. The outer wall of the outer supporting sleeve is provided with a hole, the inner wall of the outer sleeve supporting rigid overall expansion to the outer wall, the supporting body is arranged in the sponge cavity between the inner and outer walls of the outer supporting sleeve within the drilling screw supporting body in the sponge, and the drill body can be extended from the hole of the nail, the corresponding each of the holes in a drill nail; the top block with the top of the rod body connection, connection block is located at the top of the end cover on the rod body, a locking screw connection with the nut, and the cover is locked on the top block. The utility model has the advantages of simple structure and simple operation, and avoids the operation of pouring the coagulating agent into the hole when anchoring, thereby saving time. At the same time, the utility model has the advantages of firm connection, high durability and high popularization value.
【技术实现步骤摘要】
本技术属于岩土工程中支护设备,具体涉及一种岩土工程中用的锚固扩撑装置。
技术介绍
锚杆由于其施工简单、工艺成熟,且占用空间小、可承受拉力大等优点在建筑、公路、铁路等工程中得到广泛应用。根据锚杆的锚固方式可分为机械锚固型和黏结锚固型两类。锚固装置或锚杆杆体和孔壁接触,利用摩擦力发挥锚固作用的锚杆,属于机械锚固型锚杆;锚杆杆体部分或全长利用树脂、砂浆、快硬水泥等胶结材料将锚杆杆体和孔壁黏结固定在一起,通过粘结力实现锚固作用的锚杆属于黏结型锚杆。锚杆一般由锚固头与杆体组成,使用时先在岩土体中成孔,将锚杆插入孔内,再注入凝结剂进行锚固。在锚杆受拉时,粘结力成为锚杆支护体系中最基本最主要的抗力。锚杆的抗拔力与锚固体所作用的岩层性质有关,当锚杆锚固在坚硬稳定的岩层中时,锚固体所能承受的抗拔力大小由灌浆体和锚杆杆体之间的粘结力决定;当锚杆锚固在低强度、风化岩层或土层中时,锚固体所能承受的抗拔力大小由灌浆体和周围岩层或土层的粘结力决定。在中等强度岩土工程应用中,杆体承受较大拉拔剪切力时,锚杆易因粘结力降低而失效。
技术实现思路
本技术的目的在于提供一种岩土工程中用的锚固扩撑装置。本技术的锚固扩撑装置改变了传统锚固件的结构,结构简单,操作简单,避免了锚固时向孔内灌注凝结剂等操作,大大节省了时间。同时本技术连接牢固,经久耐用。本技术用的技术方案:一种岩土工程中用的锚固扩撑装置,包括杆体、外撑块、外撑套、海绵支撑体、钻钉、顶块、罩盖和锁紧螺母,杆体与外撑块连接,外撑块与外撑套套接在一起,外撑套外壁上设置有孔,外撑套的内壁可刚性地整体向外壁扩张,海绵支撑体设置在外撑套的外壁和内壁之间的 ...
【技术保护点】
一种岩土工程中用的锚固扩撑装置,包括杆体、外撑块、外撑套、海绵支撑体、钻钉、顶块、罩盖和锁紧螺母,其特征在于,杆体与外撑块连接,外撑块与外撑套套接在一起,外撑套外壁上设置有孔,外撑套的内壁可刚性地整体向外壁扩张,海绵支撑体设置在外撑套的外壁和内壁之间的空腔内,钻钉架设在海绵支撑体内,且钻钉的钉体可从所述的孔内伸出,每个所述孔对应一个钻钉;顶块与杆体的顶部连接,罩盖连接在杆体上位于顶块的上端面,锁紧螺母与螺纹连接,并将罩盖锁紧在顶块上。
【技术特征摘要】
1.一种岩土工程中用的锚固扩撑装置,包括杆体、外撑块、外撑套、海绵支撑体、钻钉、顶块、罩盖和锁紧螺母,其特征在于,杆体与外撑块连接,外撑块与外撑套套接在一起,外撑套外壁上设置有孔,外撑套的内壁可刚性地整体向外壁扩张,海绵支撑体设置在外撑套的外壁和内壁之间的空腔内,钻钉架设在海绵支撑体内,且钻钉的钉体可从所述的孔内伸出,每个所述孔对应一个钻钉;顶块与杆体的顶部连接,罩盖连接在杆体上位于顶块的上端面,锁紧螺母与螺纹连接,并将罩盖锁紧在顶块上。2.根据权利要求1所述的一种岩土工程中用的锚固扩撑装置,其特征在于,所述的外撑块的中部为一径向向外凸起的环形台体,所述环形台体的外圆面为圆锥面体,且环形台体的上部宽下部窄;所述外撑套的内壁为一刚性体,外撑套...
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