(EN) An apparatus for carrying out bi-directional load testing of close ended driven piles and injection piles utilizing a hydraulic jack, comprising an enclosure for housing the hydraulic jack (13). The enclosure (1) includes a first hollow body (10) a second hollow body (15). The first hollow body (10) had a covered upper end (10a) and an open lower end (10b), with the upper end being capped by an attached top plate (11) having an external surface (11a) which the lower end (81b) of a first pile (81) may be axially attached to, and an internal surface (lib). The open lower end (10b) has a cut-out (12) originating on the edge of the open end (10b) of the first hollow body for receiving a hydraulic connection (14) for the jack (13). The second hollow body (15) is capable of housing the hydraulic jack (13), has an open upper end (15a) and a lower end (15b). The lower end (15b) is capped by an attached base plate (17) having an external surface (17a) which the upper end (82a) of a second pile (82) may be axially attached to, and an internal surface (17b) for attaching the base (13a) of the hydraulic jack, and an opening (16) on the capped lower end (15b) originating at a point where the edge of the lower end (15b) abuts the base plate (17) for receiving the hydraulic connection (14) for the jack. The first hollow body (10) and the second hollow body (15) are capable of axial movement relative to one another when actuated by the hydraulic jack.
(ZH) 本发明涉及一种用于利用液压式千斤顶实施端部封闭的沉桩和灌注桩的双向荷载测试的装置和方法，该装置包括用于容纳液压式千斤顶的罩壳。罩壳包括第一中空体和第二中空体。第一中空体具有遮盖式上端和敞口下端，上端由附接顶板覆盖，该顶板具有外表面和内表面，第一桩的下端可轴向连接至该外表面。敞口下端具有切口，该切口开在第一中空体的敞口下端的边缘，用于接收千斤顶的液压连接部。第二中空体能够容纳液压式千斤顶，具有敞口上端并具有下端。下端由附接底板所覆盖，该底板具有外表面和内表面，第二桩的顶端可轴向附接至该外表面，该内表面用于附接液压千斤顶的基部。当由液压式千斤顶致动时，第一中空体和第二中空体能够相对彼此轴向移动。
